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

question 163

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) :

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 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.

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