You may need to use the appropriate appendix table or technology to answer this question.A simple random sample with n = 54 provided a sample mean of 29.5 and a sample standard deviation of 4.4. (Round your answers to one decimal place.)(a) Develop a 90% confidence interval for the population mean.to(b) Develop a 95% confidence interval for the population mean.to(c) Develop a 99% confidence interval for the population mean.to(d) What happens to the margin of error and the confidence interval as the confidence level is increased?O As the confidence level increases, there is a larger margin of error and a wider confidence interval.O As the confidence level increases, there is a larger margin of error and a more narrow confidence interval.O As the confidence level increases, there is a smaller margin of error and a wider confidence interval.O As the confidence level increases, there is a smaller margin of error and a more narrow confidence interval.

Givenn=54Mean(x)=29.5standard deviation(s)=4.4

Answered: You may need to use the appropriate…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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You are given the sample mean and the population standard deviation. Use this information to construct the 90% and 95% confidence intervals for the population mean. Interpret the results and compare the widths of the confidence intervals. From a random sample of 59 dates, the mean record high daily temperature in a certain city has a mean of 84.52°F. Assume the population standard deviation is 14.57°F. The 90% confidence interval is (). (Round to two decimal places as needed.) The 95% confidence interval is (O). (Round to two decimal places as needed.) Which interval is wider? Choose the correct answer below. O The 90% confidence interval O The 95% confidence interval
You are given the sample mean and the population standard deviation. Use this information to construct the 90% and 95% confidence intervals for the population mean. Interpret the results and compare the widths of the confidence intervals. From a random sample of 64 dates, the mean record high daily temperature in a certain city has a mean of 84.93°F. Assume the population standard deviation is 14.71°F. The 90% confidence interval is (.). (Round to two decimal places as needed.)
Suppose you take a random sample of n = 80 Douglas College students and ask each student their age. You find that the mean age of students in this sample is X = 22.0375 years and the sample standard deviation is s = 3.2014 years. Fill in the blanks (rounding to four decimal places): The 95% confidence interval for the mean age μ of all Douglas College students is from ______ years to ______ years.
Solve clear and correctly all subparts. Not use excel
Tina catches a 14-pound bass. She does not know the population mean or standard deviation. So she takes a sample of five friends and they say the last bass they caught was 9, 12, 13, 10, and 10 pounds. Find the t and calculate a 95% (α = .05) confidence interval.
Please note that answer 1537 was incorrect.
You are given the sample mean and the population standard deviation. Use this information to construct the 90% and 95% confidence intervals for the population mean. Interpret the results and compare the widths of the confidence intervals. From a random sample of 75 dates, the mean record high daily temperature in a certain city has a mean of 82.74°F Assume the population standard deviation is 13.95°F. The 90% confidence interval is ( D (Round to two decimal places as needed.) The 95% confidence interval is ( ). (Round to two decimal places as needed.) Which interval is wider? Choose the correct answer below. TO The 90% confidence interval O The 95% confidence interval Interpret the results. OA. You can be certain that the mean record high temperature was within the 90% confidence interval for approximately 68 of the 75 days, and was within the QE0L confidonco Intorval for annrovimatoly 71 nf the 7E dave
If n = 580 and X = 464, construct a 90% confidence interval for the population proportion, p.Give your answers to three decimals______< p < ______
You are given the sample mean and the population standard deviation. Use this information to construct the 90% and 95% confidence intervals for the population mean. Interpret the results and compare the widths of the confidence intervals. From a random sample of 59 dates, the mean record high daily temperature in a certain city has a mean of 82.46°F. Assume the population standard deviation is 14.93°F. The 90% confidence interval is ( ). (Round to two decimal places as needed.).
You may need to use the appropriate appendix table or technology to answer this question. A simple random sample with n = 56 provided a sample mean of 26.5 and a sample standard deviation of 4.4. (Round your answers to one decimal place.) (a) Develop a 90% confidence interval for the population mean. to (b) Develop a 95% confidence interval for the population mean. to (c) Develop a 99% confidence interval for the population mean. to (d) What happens to the margin of error and the confidence interval as the confidence level is increased? As the confidence level increases, there is a smaller margin of error and a more narrow confidence interval.As the confidence level increases, there is a smaller margin of error and a wider confidence interval. As the confidence level increases, there is a larger margin of error and a wider confidence interval.As the confidence level increases, there is a larger margin of error and a more narrow confidence interval.
You would like to construct a 95% confidence interval to estimate the population mean score on a nationwide examination in psychology, and for this purpose we choose a random sample of exam scores. The sample we choose has a mean of 511 and a standard deviation of 71. (a) What is the best point estimate, based on the sample, to use for the population mean? X ? (b) For each of the following sampling scenarios, determine which distribution should be used to calculate the critical value for the 95% confidence interval for the population mean. (In the table, Z refers to a standard normal distribution, and t refers to a t distribution.)

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