The table below presents the summary statistics for the starting annual salaries

Question

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. 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?

Explanation / Answer

Main assumptions for testing of hypothesis is

Sample comes from population is normally distributed. And

Samples should be random and independent.

So And is D) both I and II are necessary

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