The table below presents the summary statistics for the starting annual salaries (in thousands of dollars) for individuals entering the public accounting and financial planning professions.

Sample I (public accounting):1= 60.35,S1= 3.25,n1= 12

Sample II (financial planning):2= 58.20,S2= 2.48,n2= 14

Test whether the mean starting annual salaries for individuals entering the public accounting professions is higher than that of financial planning assuming that the two population variances are the same.

What assumptions are necessary for testing whether there is evidence of a difference in the variances to be valid?

Group of answer choices

Both samples are random and independent.

Both sampled populations are normally distributed.

Neither A nor B is necessary.

Both A and B are necessary.