SCENARIO 10-15
the Table Below Presents the Summary Statistics for the Starting

question 91

Multiple Choice

SCENARIO 10-15
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) : $\bar { X } _ { 1 } = 60.35 , S _ { 1 } = 3.25 , n _ { 1 } = 12$
Sample II (financial planning) : $\bar { X } _ { 2 } = 58.20 , S _ { 2 } = 2.48 , n _ { 2 } = 14$ 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.
-Referring to Scenario 10-15, what assumption(s) is(are) necessary for testing whether there is evidence of a difference in the variances to be valid?

• A) Both sampled populations are normally distributed.
• B) Both samples are random and independent.
• C) Neither (a) nor (b) is necessary.
• D) Both (a) and (b) are necessary.