The ages of the 79 actresses at the time that they won Oscars for the Best Actress
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The ages of the 79 actresses at the time that they won Oscars for the Best Actress category have a mean of 35.8 years and a standard deviation of 11.3 years. The ages of the 79 actors at the time that they won Oscars for the category of Best Actor have a mean of 43.8 years and a standard deviation of 8.9 years. Assume that the samples are simple random samples.
a. Construct the 99% confidence interval estimate of the mean age of actresses at the time that they win Oscars for the Best Actress category.
b. Construct the 99% confidence interval estimate of the mean age of actors at the time that they win Oscars for the Best Actor category.
c. Compare the results.
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a Since the samples are simple random samples the population means and standard deviations ca...View the full answer
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