TABLE 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): 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.
-Referring to Table 10-15, what assumptions 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.

Question

TABLE 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):  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.
-Referring to Table 10-15, what assumptions 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.

Quizplus · Accepted Answer

For this test, it is necessary to assume that both sampled populations are normally distributed and that the two samples are random and independent.

TABLE 10-15 The Table Below Presents the Summary Statistics for the Starting