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65. Scholarship Examination Scores. At Western University the historical mean of scholarship examination scores for freshman applications is 900. A historical popula- tion standard deviation o= 180 is assumed known. Each year, the assistant dean uses a sample of applications to determine whether the mean examination score for the new freshman applications has changed. a. State the hypotheses. b. What is the 95% confidence interval estimate of the population mean examination score if a sample of 200 applications provided a sample mean x = 935? c. Use the confidence interval to conduct a hypothesis test. Using a = .05, what is your conclusion? d. What is the p-value? children in the United

65. Scholarship Examination Scores. At Western University the historical mean of scholarship examination scores for freshman applications is 900. A historical popula- tion standard deviation o= 180 is assumed known. Each year, the assistant dean uses a sample of applications to determine whether the mean examination score for the new freshman applications has changed. a. State the hypotheses. b. What is the 95% confidence interval estimate of the population mean examination score if a sample of 200 applications provided a sample mean x = 935? c. Use the confidence interval to conduct a hypothesis test. Using a = .05, what is your conclusion? d. What is the p-value? children in the United

MATLAB: An Introduction with Applications
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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for application. b. If a sample mean of x = 16.32 ounces were found, what is the p-value? What action would you recommend? c. If a sample mean of x = 15.82 ounces were found, what is the p-value? What action would you recommend? d. Use the critical value approach. What is the rejection rule for the preceding hypothesis testing procedure? Repeat parts (b) and (c). Do you reach the same conclusion? 65. Scholarship Examination Scores. At Western University the historical mean of scholarship examination scores for freshman applications is 900. A historical popula- tion standard deviation o= 180 is assumed known. Each year, the assistant dean uses a sample of applications to determine whether the mean examination score for the new freshman applications has changed. a. State the hypotheses. b. What is the 95% confidence interval estimate of the population mean examination score if a sample of 200 applications provided a sample mean x = 935? c. Use the confidence interval to conduct a hypothesis test. Using a = .05, what is your conclusion? d. What is the p-value? 66. Exposure to Background Television. CNN reports that young children in the United States are exposed to an average of 4 hours of background television per day. Having the television on in the background while children are doing other activities may have adverse consequences on a child's well-being. You have a research hypothesis that posed to more than 4 hours of daily back- om sample are
Transcribed Image Text:for application. b. If a sample mean of x = 16.32 ounces were found, what is the p-value? What action would you recommend? c. If a sample mean of x = 15.82 ounces were found, what is the p-value? What action would you recommend? d. Use the critical value approach. What is the rejection rule for the preceding hypothesis testing procedure? Repeat parts (b) and (c). Do you reach the same conclusion? 65. Scholarship Examination Scores. At Western University the historical mean of scholarship examination scores for freshman applications is 900. A historical popula- tion standard deviation o= 180 is assumed known. Each year, the assistant dean uses a sample of applications to determine whether the mean examination score for the new freshman applications has changed. a. State the hypotheses. b. What is the 95% confidence interval estimate of the population mean examination score if a sample of 200 applications provided a sample mean x = 935? c. Use the confidence interval to conduct a hypothesis test. Using a = .05, what is your conclusion? d. What is the p-value? 66. Exposure to Background Television. CNN reports that young children in the United States are exposed to an average of 4 hours of background television per day. Having the television on in the background while children are doing other activities may have adverse consequences on a child's well-being. You have a research hypothesis that posed to more than 4 hours of daily back- om sample are
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