A certain index tracks daily how people from a certain country evaluate their lives, both now...
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A certain index tracks daily how people from a certain country evaluate their lives, both now and in five years, on a certain striving scale, where "0" represents the worst possible life and "10" represents the best possible life. Respondents are classified as "thriving" if they rate their current life a 7 or higher and their future life an 8 or higher. Daily results are based on a three-day rolling average, based on telephone interviews with 997 adults from that country. A recent report stated that 489 of 997 adults were thriving. Do these responses provide strong evidence that more than 46% of adults are thriving? Correct the mistakes you find in the following student's attempt to test an appropriate hypothesis. A Click the icon to view the student's attempt. OC. No because the sample is not a simple random sample. O D. No because the correct conditions are SRS, np = 997(0.46) = 458.62, and nq = 997(0.54) = 538.38. /Are the calculations for the confidence interval correct? Select the correct choice below and, if necessary, fill in the answer boxes to complete your choice. O A. The calculations for the confidence interval are correct. O B. The calculations for the confidence interval are not correct because SE (p) should be used instead of SD(p). The correct confidence interval is ( ) (Round to three decimal places.) O C. The calculations for the confidence interval are not correct because z* = 1.960. The correct confidence interval is ( (Round three decimal places.) O D. The calculations for the confidence interval are not correct because p is incorrect. The correct confidence interval is D (Round to three decimal places.) Is the interpretation correct? O A. The interpretation is correct. O B. The interpretation is not correct. Since 0.46 is not within the interval, the true percentage of those who are "thriving" is not 46%. OC. The interpretation is not correct because the proportion of days when people are thriving is 0.490. O D. The interpretation is not correct. Since 0.46 is within the interval, it's a plausible value for the true proportion of those who are "thriving." A certain index tracks daily how people from a certain country evaluate their lives, both now and in five years, on a certain striving scale, where "0" represents the worst possible life and "10" represents the best possible life. Respondents are classified as "thriving" if they rate their current life a 7 or higher and their future life an 8 or higher. Daily results are based on a three-day rolling average, based on telephone interviews with 997 adults from that country. A recent report stated that 489 of 997 adults were thriving. Do these responses provide strong evidence that more than 46% of adults are thriving? Correct the mistakes you find in the following student's attempt to test an appropriate hypothesis. A Click the icon to view the student's attempt. OC. No because the sample is not a simple random sample. O D. No because the correct conditions are SRS, np = 997(0.46) = 458.62, and nq = 997(0.54) = 538.38. /Are the calculations for the confidence interval correct? Select the correct choice below and, if necessary, fill in the answer boxes to complete your choice. O A. The calculations for the confidence interval are correct. O B. The calculations for the confidence interval are not correct because SE (p) should be used instead of SD(p). The correct confidence interval is ( ) (Round to three decimal places.) O C. The calculations for the confidence interval are not correct because z* = 1.960. The correct confidence interval is ( (Round three decimal places.) O D. The calculations for the confidence interval are not correct because p is incorrect. The correct confidence interval is D (Round to three decimal places.) Is the interpretation correct? O A. The interpretation is correct. O B. The interpretation is not correct. Since 0.46 is not within the interval, the true percentage of those who are "thriving" is not 46%. OC. The interpretation is not correct because the proportion of days when people are thriving is 0.490. O D. The interpretation is not correct. Since 0.46 is within the interval, it's a plausible value for the true proportion of those who are "thriving."
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Related Book For
Business Statistics
ISBN: 978-0321925831
3rd edition
Authors: Norean Sharpe, Richard Veaux, Paul Velleman
Posted Date:
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