Given that X̄=20, σ=9 and n=81, construct the following confidence intervals: the 95% confidence interval for μ is:  a (18.04, 21.96) b (17.68, 22.47) c (18.40, 23.48) d (18.67, 22.87)

Q: a. Find the 90% confidence interval for μ. b. Find the 95% confidence interval for μ. c. What…

A: Given, x=16.7σ2=16n = 60

Q: If n=30, ¯xx¯(x-bar)=43, and s=16, construct a confidence interval at a 98% confidence level. Assume…

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Q: The correct value of Z to use for an 80% confidence interval for is: O A. 1.96 О В. 1.28 O C. 2.33 O…

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Q: A random survey of 495 adults found that 59 had diabetes. Which of the following is a 98% confidence…

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Q: If X = 114, α= 20, and n = 33, construct a 99% confidence interval estimate for the population mean,…

A: Given data:  Sample Mean = 114 Population standard deviation = 20 Sample size = 33 Confidence level…

Q: Construct the confidence interval for the population mean μ. c = 0.90, x= 16.9, o = 5.0, and n = 50…

A: c=0.90Mean()=16.9standard deviation()=5.0sample size(n)=50

Q: Given X̄=33, s=9 and n=25, construct the following confidence intervals: the 99% confidence interval…

A: Obtain the degrees of freedom. The degrees of freedom  is obtained below: Use EXCEL Procedure for…

Q: If X=70​, σ=14​, and n=61​, construct a 99​% confidence interval estimate of the population​ mean,…

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Q: If n=22, ¯xx¯(x-bar)=45, and s=4, construct a confidence interval at a 90% confidence level. Assume…

A: Ans -   Given the level of confidence interval   90 %                      Then   α = 1 - 0.90 =…

Q: Construct the confidence interval for the population mean μ. c = 0.90, x=4.7, o=0.8, and n =47 A 90%…

A: From the provided information,Confidence level (c) = 0.90Sample mean (x̄) = 4.7Standard deviation…

Q: If n = 28, ¯xx¯ = 49, and s = 19, construct a confidence interval at a 90% confidence level. Assume…

A: Given information- Sample size, n = 28 Sample mean, x-bar = 49 Sample standard deviation, s = 19…

Q: Given the following : Y = 80+ 15.5 X, if the confidence Interval for B, was estimated to be from…

A: We have to find correct option..

Q: In terms of z scores, a 95% confidence interval consists of which of the following ranges? 1. ±1 z

A: Given, Z=x-μσ where, x= observed value μ=mean of the sample σ=standard deviation

Q: The table below provides the information needed to produce the 97% confidence interval for p1 – P2.…

A: There are two independent variables which follows normal distribution. We have to construct 97%…

Q: c=0.95, x = 16.9 o = 7.0, and n= 50 A 95% confidence interval foru is O D. (Round to one decimal…

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Q: A history teacher records the SAT scores of all 87 of her students. The data is used to construct a…

A: For calculating the confidence interval, we need to satisfy the following conditions: Independence…

Q: A 95% confidence interval for the population proportion of professional tennis players who earn more…

A: 95% confidence interval for p : (0.82,0.88)Sample size used(n) = ? Margin of error : E = sample…

Q: sample of 16 students was taken from university. These students spent an average of $170 on books…

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Q: Calculate the 95% confidence interval for these set of data: 3.0, 3.4, 3.5, 3.2,3.3 and 3.7 ppm a.…

A: Given data is3.0,3.4,3.5,3.2,3.3,3.7

Q: Construct the confidence interval for the population mean u. c= 0.98, x= 16.2, o =6.0, and n= 100…

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Q: The confidence interval at the 95% confidence level for mu(u) was reported to be (69.7, 90.3). Which…

A: Given, 95% confidence interval is (69.7, 90.3) lower limit at 95% C I = 69.7 upper limit at 95% C I…

Q: Construct the confidence interval for the population mean μ. c= 0.90, x= 5.4, o=0.4, and n = 58

A: The confidence level c=0.90 Sample mean = 5.4 Population standard deviations= 0.4 Sample size n= 58…

Q: A 95% confidence interval forp is given as (0.34,0.66). How large was the sample used to construct…

A: Formula for the sample size needed to estimate a population proportion is

Q: A 90​%confidence interval for μ is  ​(Round to one decimal place as​ needed.)

A:

Q: If a 90% confidence interval for µ is [15, 25],  then X=?, e=?

A: Note: Hello! Thank You for the question. We are considering 'e' as margin of error. From the given…

Q: Construct the confidence interval for the population mean u. c= 0.90, x = 9.6, o = 0.7, and n= 47 A…

A: x¯ = 9.6σ = 0.7n = 47c = 0.90

Q: A sample of 260 observations selected from a population produced a sample proportion equal to 0.85.…

A: From the given information, let X be the number of observations selected from the population. Total…

Q: If n=15, ¯xx¯(x-bar)=33, and s=19, construct a confidence interval at a 80% confidence level. Assume…

A: Given' :  sample mean xbar=33  sample size n=15  sample standard deviations s=14  then to find 80%…

Q: Construct the confidence interval for the population mean μ. c = 0.98, x = 9.1, o=0.8, and n = 44 A…

A: Answer:- Given, Confidence level, c = 0.98Sample mean,  = 9.1 Population standard deviation, σ = 0.8…

Q: If n=41, ¯x=39, and s=16, construct a confidence interval at a 99% confidence level. Assume the data…

A: Given that  Sample size (n) = 41 Sample mean (x¯) = 39 Sample standard deviation (s) = 16 Confidence…

Q: A 95% confidence interval for is I D. (Round to one decimal place as needed.)

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Q: Given that X̄=20, σ=9 and n=81, construct the following confidence intervals: the 98% confidence…

A:

Q: In a survey of 2092 adults in a recent year, 748 made a New Year's resolution to eat healthier.…

A: Given data n=2092 x=748

Q: Given X̄=33, s=9 and n=25, construct the following confidence intervals: the 95% confidence interval…

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Q: If n=28, ¯x(x-bar)=32, and s=11, construct a confidence interval at a 95% confidence level. Assume…

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Q: If n=13, ¯xx¯(x-bar)=37, and s=9, construct a confidence interval at a 80% confidence level. Assume…

A: Givenn =13x = 37s=9confidence interval =80%

Q: The 85.7% confidence interval estimate for p was (0.14, 0.16). Find ?′ and ME

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Q: In terms of z-scores, a 95% confidence interval consists of which of the following ranges?

A: 95% confidence interval is given by,  mean ± z0.05/2 *standard deviation = mean ± z0.025 *standard…

Q: Construct the confidence interval for the population mean u. c= 0.98, x = 16.4, o = 2.0, and n= 100…

A:

Q: Construct the confidence interval for the population mean µ. c = 0.90, x = 16.5, o = 9.0, and n= 35…

A: Solution: From the given information, the confidence level is 0.90, x-bar=16.5, σ=9 and n=35.

Q: If X=96​, σ=9​, and n=63​, construct a 99​% confidence interval estimate of the population​ mean, μ.

A: x¯ = 96σ = 9n = 63construct 99% ci for μ.

Q: The Za/2 value for a confidence interval is found as 1.29. What is the confidence level? Select one:…

A: To calculate: The Confidence level

Q: If n=29, x¯=48, and s=13, construct a confidence interval at a 90% confidence level. Assume the data…

A: The confidence level is 90%. Then the probability is 10%=100%-90%. The degrees of freedom is,…

Q: 15, ¯xx¯(x-bar)=39, and s=11, construct a confidence interval at a 95% confidence level. Assume the…

A: Sample size (n) =15 Sample mean (x¯)=39 Sample standard deviation (s)=11 Confidence level (C)=95%…

Q: Given X̄=33, s=9 and n=25, construct the following confidence intervals: the 90% confidence interval…

A: Solution: From the given information, x-bar=33, s=9 and n=25. The confidence level is 0.90.

Q: If X=68​, σ=14​, and n=66​, construct a 95​% confidence interval estimate of the population​ mean, μ

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Q: Construct the confidence interval for the population mean p. c= 0.95, x= 5.7, o = 0.5, and n= 57 A…

A:

2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.