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Use the sample data and confidence level given below complete parts (a) through (d). A research institute poll asked respondents if they felt vulnerable to identity theft. In the poll, n= 972 and x = 502 who said "yes." Use a 90% confidence level. E Click the icon to view a table of z scores. a) Find the best point estimate of the population proportion p. 0.5165 (Round to three decimal places as needed.) b) Identify the value of the margin of error E. E-0 (Round to three decimal places needed.) c) Construct the confidence interval. (Round to three decimal places as needed.) d) Write a statement that correctly interprets the confidence interval. Choose the correct answer below. O A. One has 90% confidence that the sample proportion is equal to the population proportion. OB. 90% of sample proportions will fall between the lower bound and the upper bound. O C. One has 90% confidence that the interval from the lower bound to the upper bound actually does contain the true value of the population proportion. OD. There is a 90% chance that the true value of the population proportion will fall between the lower bound and the upper bound.

Use the sample data and confidence level given below complete parts (a) through (d). A research institute poll asked respondents if they felt vulnerable to identity theft. In the poll, n= 972 and x = 502 who said "yes." Use a 90% confidence level. E Click the icon to view a table of z scores. a) Find the best point estimate of the population proportion p. 0.5165 (Round to three decimal places as needed.) b) Identify the value of the margin of error E. E-0 (Round to three decimal places needed.) c) Construct the confidence interval. (Round to three decimal places as needed.) d) Write a statement that correctly interprets the confidence interval. Choose the correct answer below. O A. One has 90% confidence that the sample proportion is equal to the population proportion. OB. 90% of sample proportions will fall between the lower bound and the upper bound. O C. One has 90% confidence that the interval from the lower bound to the upper bound actually does contain the true value of the population proportion. OD. There is a 90% chance that the true value of the population proportion will fall between the lower bound and the upper bound.

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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Researchers collected data on the numbers of hospital admissions resulting from motor vehicle crashes, and results are given below for Fridays on the Oth of a month and Fridays on the following 13th of the same month. Use a 0.05 significance level to test the claim that when the 13th day of a month falls on a Friday. the numbers of hospital admissions from motor vehicle crashes are not affected. Friday the 6th: 7 12 12 3 Friday the 13th: 13 13 15 11 5 14 What are the hypotheses for this test? Let be the V in the numbers of hospital admissions resulting from motor vehicle crashes for the population of all pairs of data. H: H VO Find the value of the test statistic. t= (Round to three decimal places as needed.) Identify the critical value(s). Select the correct choice below and fill the answer box within your choice. (Round to three decimal places as needed.) O A. The critical values are t= +. O B. The critical value is t= State the result of the test. Choose the correct answer below. O A. There is not sufficient evidence to warrant rejection of the claim of no effect. Hospital admissions appear to be affected. O B. There is not sufficient evidence to warrant rejection of the claim of no effect. Hospital admissions do not appear to be affected. O C. There is sufficient evidence to warrant rejection of the claim of no effect. Hospital admissions do not appear to be affected. O D. There is sufficient evidence to warrant rejection of the claim of no effect. Hospital admissions appear to be affected.
Transcribed Image Text:Researchers collected data on the numbers of hospital admissions resulting from motor vehicle crashes, and results are given below for Fridays on the Oth of a month and Fridays on the following 13th of the same month. Use a 0.05 significance level to test the claim that when the 13th day of a month falls on a Friday. the numbers of hospital admissions from motor vehicle crashes are not affected. Friday the 6th: 7 12 12 3 Friday the 13th: 13 13 15 11 5 14 What are the hypotheses for this test? Let be the V in the numbers of hospital admissions resulting from motor vehicle crashes for the population of all pairs of data. H: H VO Find the value of the test statistic. t= (Round to three decimal places as needed.) Identify the critical value(s). Select the correct choice below and fill the answer box within your choice. (Round to three decimal places as needed.) O A. The critical values are t= +. O B. The critical value is t= State the result of the test. Choose the correct answer below. O A. There is not sufficient evidence to warrant rejection of the claim of no effect. Hospital admissions appear to be affected. O B. There is not sufficient evidence to warrant rejection of the claim of no effect. Hospital admissions do not appear to be affected. O C. There is sufficient evidence to warrant rejection of the claim of no effect. Hospital admissions do not appear to be affected. O D. There is sufficient evidence to warrant rejection of the claim of no effect. Hospital admissions appear to be affected.
Use the sample data and confidence level given below to complete parts (a) through (d). A research institute poll asked respondents if they felt vulnerable to identity theft. In the poll, n= 972 and x= 502 who said "yes." Use a 90% confidence level. E Click the icon to view a table of z scores. a) Find the best point estimate of the population proportion p 0.5165 (Round to three decimal places as needed.) b) Identify the value of the margin of error E. E-0 (Round to three decimal places as needed.) c) Construct the confidence interval. (Round to three decimal places as needed.) d) Write a statement that correctly interprets the confidence interval. Choose the correct answer below. O A. One has 90% confidence that the sample proportion is equal to the population proportion. O B. 90% of sample proportions will fall between the lower bound and the upper bound. O C. One has 90% confidence that the interval from the lower bound to the upper bound actually does contain the true value of the population proportion. O D. There is a 90% chance that the true value of the population proportion will fall between the lower bound and the upper bound.
Transcribed Image Text:Use the sample data and confidence level given below to complete parts (a) through (d). A research institute poll asked respondents if they felt vulnerable to identity theft. In the poll, n= 972 and x= 502 who said "yes." Use a 90% confidence level. E Click the icon to view a table of z scores. a) Find the best point estimate of the population proportion p 0.5165 (Round to three decimal places as needed.) b) Identify the value of the margin of error E. E-0 (Round to three decimal places as needed.) c) Construct the confidence interval. (Round to three decimal places as needed.) d) Write a statement that correctly interprets the confidence interval. Choose the correct answer below. O A. One has 90% confidence that the sample proportion is equal to the population proportion. O B. 90% of sample proportions will fall between the lower bound and the upper bound. O C. One has 90% confidence that the interval from the lower bound to the upper bound actually does contain the true value of the population proportion. O D. There is a 90% chance that the true value of the population proportion will fall between the lower bound and the upper bound.
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