53. Retirement. A survey of 1000 workers indicated that approximately 520 have invested in an individual retirement
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53. Retirement. A survey of 1000 workers indicated that approximately 520 have invested in an individual retirement account. National data suggests that 44% of workers invest in individual retirement accounts.
a) Create a 95% confidence interval for the proportion of workers who have invested in individual retirement accounts based on the survey.
b) Does this provide evidence of a change in behavior among workers? Using your confidence interval, test an appropriate hypothesis and state your conclusion.
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Related Book For
Business Statistics
ISBN: 9780321716095
2nd Edition
Authors: Norean D. Sharpe, Paul F. Velleman, David Bock, Norean Radke Sharpe
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