Life expectancy hypothesis testing
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On a sample of 50 US married couples, it has been found that on average females live longer (80 years) than males (75 years).
a) Using the fact that the corresponding standard deviations are thought to be σ female = 3 and σ male = 4 years respectively, determine if this data indicate that female live longer than males, using confidence intervals.
b) Are there any concerns about this data set?
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Solution Summary
This solution provides steps to determine life expectancy and discusses concerns about this data set.
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a) Using the fact that the corresponding standard deviations are thought to be σfemale = 3 and σmale = 4 years respectively, determine if this data indicate that female live longer than males, using confidence intervals.
The critical value for ...
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