A survey of 1000 workers indicated that approximately 520 have invested in an individual retirement account. National

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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) Test an appropriate hypothesis and state your conclusion.

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Business Statistics

ISBN: 9780321925831

3rd Edition

Authors: Norean Sharpe, Richard Veaux, Paul Velleman

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Question Posted: May 15, 2015 01:23 AM

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A survey of 1000 workers indicated that approximately 520 have invested in an individual retirement account. National

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a The study doesnt state whether the sample is a SRS so we would have to assume th...View the full answer

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