Test Hypotheses Regarding the Difference of Two Independent Means
-At a local store, 65 female employees were randomly selected and it was found that their mean monthly income was $617 with a standard deviation of $121.50. Seventy-five male employees were also randomly selected and their mean monthly income was found to be $659 with a standard deviation of $168.70. Test the hypothesis that male employees have a higher monthly income than female employees. Use = 0.01.

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The Answer of Test Hypotheses Regarding the Difference of Two Independent Means
-At a local store, 65 female employees were randomly selected and it was found that their mean monthly income was $617 with a standard deviation of $121.50. Seventy-five male employees were also randomly selected and their mean monthly income was found to be $659 with a standard deviation of $168.70. Test the hypothesis that male employees have a higher monthly income than female employees. Use = 0.01.