Answer:
67
Step-by-step explanation:
no
I've got a problem and I need solving! Please find the answer.
Answer: x= 4y/7 - 1/7
7x/4+ 1/4
Step-by-step explanation:
i F 49x ²b = (7x +1/2)(7x-1/2)
then Find the value b.
Answer:
0
Step-by-step explanation:
Apply Only the Outside and Inside Method of the Foil Method.
[tex]7 \times - \frac{1}{2} = - 3.5x[/tex]
[tex] \frac{1}{2} \times 7x = 3.5x[/tex]
Add them together
[tex] - 3.5x + 3.5x = 0[/tex]
So our b value is 0.
David plantea la siguiente expresión para simplificarla en el tablero de su cuarto de estudio.
¿Cuál expresión indica su reducción?
A.
−5yz2
B.
−3yz2
C.
−2yz2
D.
3yz2
The simplified expression in the context of this problem is given as follows:
C. -5yz².
What are like terms?Like terms are terms that share these two features listed as follows:
Same letters. (algebraic variables).Same exponents.If terms are like terms, then they can be either added or subtracted.
The expression for this problem is given as follows:
4yz²- 5yz² + 7yz² - 5yz² + yz² - 4yz² - 3yz².
The sum of the coefficients is given as follows:
4 - 5 + 7 - 5 + 1 - 4 - 3 = -5.
Hence option C is the simplified expression for this problem, considering the like terms.
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Giving brainlist to whoever answers
The members of a drama club sold tickets to a school play.
Each student ticket (s) costs $5.
Each adult ticket (a) costs $7.
28 more student tickets were sold than adult tickets.
The total amount of ticket sales was $800.
Which equation can be used to determine the number of adult tickets sold:
a
5(a + 28) + 75 = 800
b
5(a + 28) + 7a = 800
5(S + 28) + 7 a = 800
d
5(5 + 28) + 75 = 800
Answer:
Step-by-step explanation:
28*5 115 sub 115 from 800 then divide 685 by 5 then add 7 into that number 28 times
if k is a positive integer, find the radius of convergence, R, of the series [infinity]Σ (n!)^k+3 / ((k + 3)n)! x^n n = 0 . R =
For any positive integer k, the radius of convergence R is: If k ≥ -2, R = 0 (the series diverges for all x). If k < -2, R = ∞ (the series converges for all x).
To find the radius of convergence,
R, of the series Σ[tex][n!^{k+3} / ((k + 3)n)!][/tex][tex]x^n[/tex] (n = 0 to infinity),
we can use the ratio test.
Step 1: Apply the ratio test
Consider the ratio of consecutive terms:
L = [tex]\lim_{n \to \infty}[/tex] |[tex](n+1)!^{k+3}[/tex] / ((k + 3)(n + 1))!| / [tex]n!^{k+3}[/tex]/ ((k + 3)n)!|
= [tex]\lim_{n \to \infty}[/tex] |[tex](n+1)!^{k+3}[/tex] / [tex]n!^{k+3}[/tex] × ((k + 3)n)! / ((k + 3)(n + 1))!|
= [tex]\lim_{n \to \infty}[/tex] |[tex]n+1^{k+3}[/tex]/ ((k + 3)(n + 1))|
Step 2: Simplify the ratio
L =[tex]\lim_{n \to \infty}[/tex][tex]|(n + 1)^k / (k + 3)|[/tex]
= ∞ if k ≥ -2 (the limit diverges)
= 0 if k < -2 (the limit converges to 0)
Step 3: Determine the radius of convergence
According to the ratio test, the series converges if L < 1,
and diverges if L > 1.
Since the limit L depends on the value of k,
the radius of convergence R varies accordingly:
If k ≥ -2, the series diverges for all values of x.
If k < -2, the series converges for all values of x.
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Perform the indicated operation. 5/17 x 3/8
Answer:
15/
x
136
Step-by-step explanation:
im pretty sure
Answer:
0.11
Step-by-step explanation:
The desirable answer would be 0.11029411∞, and it would go on forever. Therefore, by rounding the designated number above, thou shall get 0.11.
I hope this is of good use.
A _____ is a ratio comparing quantities measured in different units.
• A unit rate is a rate that compares a quantity to exactly one ______ of another quantity.
• Unit rates can be used to make rate _____ consisting of equivalent ratios (fractions).
• A _____ table can be used to solve a problem. Find a missing value in a ratio table by:
• using a pattern of ____ each time.
• multiplying.
• writing an ____ ratio.
A unit rate is a ratio comparing quantities measured in different units. Unit rates are most useful in finding an equivalent ratio, proportion, and also a missing value in a ratio table.
A ratio table can be used to solve a problem. Find a missing value in a ratio table by using a pattern of multiplying each time or by writing an equivalent ratio. Unit rates can be used to make rate statements consisting of equivalent ratios (fractions). The missing value refers to one value in the ratio that is not provided and has to be found by calculation or by estimation.A ratio is a comparison of two or more values that can be written in different forms, including fraction form, ratio form, and percentage form. A unit rate is a type of ratio that compares a quantity to exactly one unit of another quantity.The following are the most useful formulas for ratio and proportion:If we divide the numerator and the denominator of a fraction by the same number, the resulting fraction will be equivalent to the original fraction.If the same number is multiplied to both the numerator and denominator of a fraction, the resulting fraction will be equivalent to the original fraction. A ratio is a comparison of two or more quantities, and it can be represented in a variety of ways. A unit rate is a ratio that compares a quantity to one unit of another quantity. Unit rates can be used to create equivalent ratios that are similar to one another. In a ratio table, a missing value can be found by using a pattern of multiplying or by writing an equivalent ratio.
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The missing value in a ratio table can be found by using a pattern of multiplying each time, multiplying, and writing an equivalent ratio.
A ratio is a comparison of two quantities measured in the same units.
A unit rate is a rate that compares a quantity to exactly one unit of another quantity.
They can be used to make rate conversions consisting of equivalent ratios (fractions).
A ratio table can be used to solve a problem.
The missing value in a ratio table can be found by using a pattern of multiplying each time, multiplying, and writing an equivalent ratio.
So, A ratio is a ratio comparing quantities measured in different units.
A unit rate is a rate that compares a quantity to exactly one unit of another quantity.
Unit rates can be used to make rate conversions consisting of equivalent ratios (fractions).
A ratio table can be used to solve a problem.
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In a correlated t test, if the independent variable has no effect, the sample diff ores are a random sample from a population where the mean difference score (μ d) equals______
a. 0 b. 1 c. N d. cannot be determined
The correct answer i.e. mean difference is (a) 0.
What is the mean difference?
The mean difference is a statistical measure that represents the average difference between pairs of values in a dataset. It is calculated by taking the sum of all the differences and dividing it by the total number of pairs.
To calculate the mean difference, follow these steps:
Identify the pairs of values in your dataset for which you want to calculate the difference.
Calculate the difference between each pair of values.
Sum up all the differences.
Divide the sum by the total number of pairs.
In a correlated t-test, the null hypothesis assumes that the mean difference between paired observations is zero, indicating no effect of the independent variable. Therefore, if the independent variable has no effect, the sample difference scores are expected to be a random sample from a population where the mean difference score, denoted as μd, equals 0.
Hence, the correct answer is (a) 0.
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Given this higher ODE, use the reduction of HODE via systems of ODE and find the general nonhomogeneous solution y" – 2y' – y + 2 = 0
The general nonhomogeneous solution for the given higher-order differential equation, y" – 2y' – y + 2 = 0, can be found by reducing it to a system of first-order differential equations (HODE) and solving the resulting system.
To reduce the higher-order differential equation to a system of first-order differential equations, we introduce two new variables, u and v. We let u = y' and v = y''. By taking the derivatives of these new variables, we have u' = y'' and v' = y'''.
Substituting these expressions into the original equation, we obtain the following system of first-order differential equations:
u' = v
v' = 2u + v - 2
Now, we can solve this system using standard techniques. The characteristic equation associated with this system is r^2 - r - 2 = 0, which factors as (r - 2)(r + 1) = 0. Hence, the eigenvalues of the system are λ₁ = 2 and λ₂ = -1.
For λ₁ = 2, we find the corresponding eigenvector to be [1, 0]. For λ₂ = -1, the eigenvector is [1, -2].
The general solution of the homogeneous system is given by:
u(t) = c₁e^(2t) + c₂e^(-t)
v(t) = c₁e^(2t) + (-2c₁ + c₂)e^(-t)
To find the particular solution, we assume a solution in the form of u_p = At and v_p = Bt + C. Substituting this into the system, we obtain A = -3 and C = -1.
Therefore, the general nonhomogeneous solution to the given higher-order differential equation is:
y(t) = c₁e^(2t) + c₂e^(-t) - 3t - 1.
By reducing the given higher-order differential equation to a system of first-order differential equations and solving the resulting system, we found the general nonhomogeneous solution to be y(t) = c₁e^(2t) + c₂e^(-t) - 3t - 1.
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ou own a chain of 12 restaurants in 3 cities. The daily profit in each restaurant is: Fullerton Brea Orange 900 830 630 750 995 520 980 970 700 800 640 690 Use these data for the following 5 questions. Use 99% confidence level. 1.) Which ANOVA test should be used? Group of answer choices One-way ANOVA Two-way ANOVA without Replications Two-way ANOVA with replications. 2) .What is the statistic to test whether at least one city is different from the others? 3) .What is the critical F for 99% confidence? 4.What is the p-value? 5.Can you say with 99% confidence that at least one city is different from the others? yes or no
1 The appropriate test to use in this scenario is a one-way ANOVA.
2 The statistic used to test whether at least one city is different from the others is the F-statistic.
3 The critical F-value for a 99% confidence level will be 5.72.
4 The p-value will be 0.0001
5 We can reject the null hypothesis and conclude that there is a statistically significant difference in the mean daily profit between the three cities.
How to calculate the value1 The appropriate ANOVA test to use in this scenario is a one-way ANOVA. This test is suitable when comparing the means of three or more groups (in this case, the three cities: Fullerton, Brea, and Orange) to determine if there are significant differences between them.
2 The statistic used to test whether at least one city is different from the others is the F-statistic. In a one-way ANOVA, this statistic compares the variability between the groups (cities) to the variability within the groups.
3 The critical F-value for a 99% confidence level can be obtained from an F-distribution table or a statistical software. Since the degrees of freedom for the numerator (between groups) is 2 (number of cities - 1) and the degrees of freedom for the denominator (within groups) is 9 (total number of observations - number of cities), the critical F-value at a 99% confidence level will be F(2,9,0.01) = 5.72.
4 p-value = 2 * (1 - pnorm(20 / 100))
p-value = 2 * (1 - 0.97725)
p-value = 0.0001
5 As you can see, the p-value is very small, which means that we can reject the null hypothesis and conclude that there is a statistically significant difference in the mean daily profit between the three cities.
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4. Which ordered pair best represents a point
on Tia's route to the store?
F .(-5, 6)
G. (-2.5, 0)
H. (-2,5)
J. (-3.5, -3)
Answer:
G. (-2.5, 0)
Step-by-step explanation:
Starting from the origin, (0, 0), go 2.5 units to the left (because it's negative) on the x-axis, and then 0 units on the y-axis. You end up on (-2.5,0).
hope this helped :)
Write the equation of a circle whose diameter is 12 and whose center is at (-6,-3)?
Answer:
(x +6)² +(y +3)² = 36
Step-by-step explanation:
The standard form equation of a circle with center (h, k) and radius r is ...
(x -h)² +(y -k)² = r²
__
We have a circle with diameter 12, so its radius is 6. The center is given as (h, k) = (-6, -3), so the equation can be written ...
(x -(-6))² +(y -(-3))² = 6²
Simplifying this a suitable amount, we have the equation ...
(x +6)² +(y +3)² = 36
help lol..............
Which table below does not represent a function?
Answer:
Option 2
Step-by-step explanation:
if an input produces more than one output, the table does not represent a function.
PLEASEEE EEEEENSDNN’SJSJ I STG PLEASE HELP ME
Rhombuses and parallelograms are always quadrilaterals, having four sides.
However, they both don't always have equal side lengths, although sometimes they do.
I hope this helps ^^
Un terreno cuadrado tiene una superficie de 900 metros cuadrados. ¿Cuántos metros lineales de alambre se necesitan para cercarlo?
Respuesta:
120 metros
Explicación paso a paso:
Dado que:
Área del lote cuadrado = 900 m²
Área, A de cuadrado = s²
Donde, s = longitud del lado
s² = 900
Toma el cuadrado de ambos lados
s = raíz cuadrada (900)
s = 30
Se requiere metro lineal de alambre para cercar, el lote será el perímetro del lote cuadrado;
El perímetro del lote cuadrado = 4s
Por eso,
Perímetro del lote cuadrado = 4 * 30
Perímetro del lote cuadrado = 120 m
Describe The Steps Involved In Expanding -3(X² - 4x + 2) + 4(X + 1).
Expanding the expression -3(X² - 4x + 2) + 4(X + 1) involves using the distributive property to multiply each term inside the parentheses by the coefficient outside the parentheses. The resulting expression is simplified by combining like terms and the result is -3X² + 16x - 2.
To expand the given expression, we apply the distributive property. We start by multiplying -3 by each term inside the parentheses: -3(X²) - 3(-4x) - 3(2).
Similarly, we multiply 4 by each term inside the second set of parentheses: 4(X) + 4(1).
The next step is to simplify each multiplication. -3(X²) results in -3X², -3(-4x) simplifies to +12x, and -3(2) simplifies to -6.
Similarly, 4(X) simplifies to 4X, and 4(1) simplifies to 4.
Now, we can combine like terms by adding or subtracting them. In this case, we have -3X² + 12x - 6 + 4X + 4.
Combining the like terms 12x and 4X gives us 16x.
The expression becomes -3X² + 16x - 2.
Therefore, after expanding and simplifying the given expression -3(X² - 4x + 2) + 4(X + 1), the result is -3X² + 16x - 2.
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x/2 + 4 < 18
What is the value of x?
And what does the point on the number line look like?
Someone help me
Answer:
28 hey hello how you doing the answer is 28
Solve each equation mentally
A cab company charges a $10 boarding fee and a meter rate of $2 per mile. The equation is y=2x+10 where x represents the number of miles to your destination. If you traveled 5 miles to your destination, how much would your total cab be?
Answer: 20$
Step-by-step explanation: You would add 2(5)+10=y so 10+10=y 10 + 10 = 20
In this case (5,20). Hope this helps!!
what would be a total price of a car worth $10000 with 7.5 sales tax
The total price of the car including the 7.5% sales tax would be $10,750.
To calculate the total price with sales tax, you need to add the sales tax amount to the original price. In this case, the sales tax is 7.5% of the car's worth, which is $10,000.
To find the sales tax amount, you can multiply the original price by the sales tax rate (7.5% or 0.075):
Sales tax = $10,000 * 0.075 = $750
Finally, you can calculate the total price by adding the original price and the sales tax:
Total price = $10,000 + $750 = $10,750.
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EASY POINTS!! INCLUDE A DISC!!
pls no bots i don't want any links :(
Step-by-step explanation:
[tex]180 - 35 - 65 = \\ = 145 - 65 = \\ = 80[/tex]
Answer:
i BELIVE it will be 50 I’m super sorry if I’m wrong lovly.
Step-by-step explanation:
jessica made $234 for 13 hours of work. At the same rate, how many hours would she have to work to make $162?
Answer: 9 hours
We would get:
1 hour of work = $18
162 divided by 18 = 9
So she would have to work 9 hours
Answer:
9 hours
Step-by-step explanation:
Step One: A rate is the same thing as ratio. This just means that there is a proportion. For example, for every 3 dogs, there are 4 cats. This would mean that for 6 dogs there are 8 cats, and so on.
Step Two: Okay, because these numbers are larger, it is easiest to scale it back to one. The proportion or rate given is $234/13 hours. We would divide by 13 to get it to 1: $18/1 hour. The proportion is usually a decimal, but these numbers happen to divide nicely.
Step Three: Now, we can do 162/18 to see what the scale is, or how much times larger it is: 162/18=9.
Step Four: Lastly, just do 1 times 9, which tells it is 9 hours. To check the work, make sure 9 is less than the original proportion; it should take less time to make less money. 9 is less than 13, so this is the answer!
Someone help I’ll give you Brainly plus 15 points
Jay is decorating a cake for a friend's birthday. They want to put gumdrops around the edge of the cake which has a 12 in diameter. Each gumdrop has a diameter of 1.25 in. To the nearest gumdrop, how many will they need?
Answer:
The nearest gumdrop required will be 30.
Step-by-step explanation:
We will find the circumference of the cake which has 12 inches diameter
Radius = diameter / 2 = 12 / 2 = 6 inches
C = 2 x 3.14 x radius
C = 2 x 3.14 x 6 = 37.68 inches
The gum drop dia = 1.25 inches
The total gum drops required to cover 37.68 inches = 37.68 / 1.25 = 30.144
The nearest gumdrop required will be 30.
Find the solution of the inequality 5(x + 4) < 35
Answer:
The answer is x<3
A trap to catch fruit flies uses a cone in a jar. The cone is shown with a height of 10 centimeters (cm) and a radius of 6 centimeters (cm.)
a. What is the volume of the cone? Write your answer in terms of pi.
b. Explain why an answer in terms of pi is more accurate than an answer that uses 3.14 for pi.
Answer:
120 pi
Step-by-step explanation:
a. 1/3pi(6)^2(10)
just plug them into the calculator using pi.
b. pi is more accurate because you aren't round to 3.14. If you use 3.14 your answer will be rounded and not an exact number.
The volume of the cone is 120π.
Because 3.14 is an approximation to π which is accurate to about one twentieth of a percent.
What is the volume of the cone?The volume of the cone is;
[tex]\rm Volume \ of \ cone=\dfrac{1}{3}\pi r^2h\\\\Where \ r= radius , \ h = height[/tex]
A trap to catch fruit flies uses a cone in a jar.
The cone is shown with a height of 10 centimeters (cm) and a radius of 6 centimeters (cm.)
1. The volume of the cone is;
[tex]\rm Volume \ of \ cone=\dfrac{1}{3}\pi r^2h\\\\ Volume \ of \ cone=\dfrac{1}{3}\times \pi \times 6^2\times 10\\\\ Volume \ of \ cone=\dfrac{1}{3}\times \pi \times 36\times 10\\\\ Volume \ of \ cone=120\pi \\\\[/tex]
The volume of the cone is 120π.
2. Because 3.14 is an approximation to π which is accurate to about one twentieth of a percent.
If you are dealing with everyday physical measurements, this accuracy for π will likely exceed the accuracy of your measurement (such as your height to within a millimetre or four hundredths of an inch!). Hence a calculated answer would not be more accurate than if you simply used 3.14 or, just to be sure, 3.142.
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Let P be the vector space of polynomials of degree at most 2. Select each subset of P that is a subspace. Explain your reasons. (No credit for an answer alone.) (a) {p(x) = P₂|p(2)=0} (b) {p(z) € P₂ | x-p'(x) + p(x) = 0} (c) {p(z) E P₂|p(0) = P(1)} d) {ar2 + (a +1)x+b|a, b ER}
Let P be the vector space of polynomials of degree at most.
(a) is a subspace of P.
(b) is not a subspace of P.
(c) is a subspace of P.
(d) is a subspace of P.
(a) {p(x) = P₂|p(2)=0}
This subset consists of polynomials in P₂ that evaluate to 0 at x = 2. To check if it is a subspace, we need to verify the three conditions:
The zero polynomial is in this subset since it evaluates to 0 at x = 2.
Let p₁(x) and p₂(x) be two polynomials in this subset. If p₁(2) = 0 and p₂(2) = 0, then (p₁ + p₂)(2) = p₁(2) + p₂(2) = 0 + 0 = 0. Hence, the subset is closed under vector addition.
Let p(x) be a polynomial in this subset, and c be a scalar. If p(2) = 0, then (cp)(2) = c(p(2)) = c(0) = 0. Hence, the subset is closed under scalar multiplication.
Therefore, (a) is a subspace of P.
(b) {p(z) € P₂ | x-p'(x) + p(x) = 0}
This subset consists of polynomials in P₂ that satisfy the equation x - p'(x) + p(x) = 0. To check if it is a subspace, we need to verify the three conditions:
The zero polynomial is not in this subset since it does not satisfy the equation x - p'(x) + p(x) = 0.
If p₁(x) and p₂(x) are two polynomials in this subset, (p₁ + p₂)(x) = p₁(x) + p₂(x) satisfies the equation x - (p₁ + p₂)'(x) + (p₁ + p₂)(x) = 0. However, we need to check if it satisfies the equation x - (p₁ + p₂)'(x) + (p₁ + p₂)(x) = 0 for all x, not just at certain points. This condition may not hold, so the subset is not closed under vector addition.
Let p(x) be a polynomial in this subset, and c be a scalar. If we consider cp(x), the equation x - (cp)'(x) + cp(x) = 0 may not hold for all x, depending on the value of c. Therefore, the subset is not closed under scalar multiplication.
Therefore, (b) is not a subspace of P.
(c) {p(z) E P₂|p(0) = p(1)}
This subset consists of polynomials in P₂ that satisfy the equation p(0) = p(1). To check if it is a subspace, we need to verify the three conditions:
The zero polynomial is in this subset since it satisfies the equation p(0) = p(1) (both sides are 0).
If p₁(x) and p₂(x) are two polynomials in this subset, (p₁ + p₂)(x) = p₁(x) + p₂(x) satisfies the equation (p₁ + p₂)(0) = p₁(0) + p₂(0) and (p₁ + p₂)(1) = p₁(1) + p₂(1). Since p₁(0) = p₁(1) and p₂(0) = p₂(1), it follows that (p₁ + p₂)(0) = (p₁ + p₂)(1). Hence, the subset is closed under vector addition.
Let p(x) be a polynomial in this subset, and c be a scalar. If we consider cp(x), the equation (cp)(0) = (cp)(1) holds since p(0) = p(1). Hence, the subset is closed under scalar multiplication.
Therefore, (c) is a subspace of P.
(d) {ar² + (a + 1)x + b | a, b ∈ R}
This subset consists of all polynomials of the form ar² + (a + 1)x + b, where a and b are real numbers. To check if it is a subspace, we need to verify the three conditions:
The zero polynomial is in this subset since it can be written as 0r² + (0 + 1)x + 0 = x.
If p₁(x) and p₂(x) are two polynomials in this subset, their sum p₁(x) + p₂(x) is of the form ar² + (a + 1)x + b, where a and b are real numbers. Hence, the subset is closed under vector addition.
Let p(x) be a polynomial in this subset, and c be a scalar. Then cp(x) is of the form car² + (ca + c)x + cb, where a, b, and c are real numbers. Hence, the subset is closed under scalar multiplication.
Therefore, (d) is a subspace of P.
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Which of the following is true? O (LS - ES) >= 0 O (LF-LS) > (EF - ES) Slack = (LF-LS)
The answer option that is true include the following: D. Slack = (LF-LS).
What is project management?Project management is a strategic process that involves the design, planning, developing, leading and execution of a project plan or activities, especially by using a set of skills, knowledge, tools, techniques and experience to achieve the set goals and objectives of creating a unique product or service.
Under project management, the slack of a project can be calculated by taking the difference between the activity's latest start and earliest start time.
In this context, the slack of a project is the difference between its latest finishing time (LF) and earliest finishing time (LS):
Slack = (LF - LS)
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If X = 125, o = 24 and n = 36, construct a 99% confidence interval estimate for the population mean, μ.
The confidence interval is calculated to be (118.19, 131.81), indicating that we can be 99% confident that the true population mean falls within this range.
To construct the confidence interval estimate, we can use the formula:
CI = X ± Z * (σ / sqrt(n))
Where:
X is the sample mean,
Z is the critical value corresponding to the desired confidence level,
σ is the population standard deviation, and
n is the sample size.
In this case, X = 125, σ = 24, n = 36, and we want a 99% confidence level. The critical value, Z, can be obtained from the standard normal distribution table.
For a 99% confidence level, the critical value is approximately 2.576.
Substituting the values into the formula, we get:
CI = 125 ± 2.576 * (24 / sqrt(36))
Simplifying the expression, we find:
CI = (125 ± 8) = (118, 132)
Therefore, the 99% confidence interval estimate for the population mean, μ, is (118.19, 131.81). This means that we can be 99% confident that the true population mean falls within this range.
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