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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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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Related Book For
Business Statistics
ISBN: 9780321925831
3rd Edition
Authors: Norean Sharpe, Richard Veaux, Paul Velleman
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