One Categorical and One Interval Variable

a) SAS/Stata Tasks.

i) Conduct two-sample t-tests for gender differences in the mean of the following three variables: (1) age , (2) bmiR , and (3) exfreqwR assuming equal variances.

ii) Test whether there is statistical evidence that the variances are equal for males and females on these same three variables.

iii) Conduct two-sample t-tests for gender differences in the mean of the following three variables: (1) age , (2) bmiR , and (3) exfreqwR assuming unequal variances.

b) Write-Up Tasks.

i) Use the results for the age variable to make a conclusion about the following null and alternative hypotheses: