Refer to the data for problem 1.
a. Find the F statistic and its numbers of degrees of freedom.
b. Interpret the F statistic in terms of how many times more volatile one source of variability is than another.
c. Find the critical value from the F table at the 5% level.
d. Report the result of the F test at the 5% level.
e. Summarize what this test has told you about any differences among these ads for consumers in general in this city.

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TABLE 15.5.1 Analysis of Ad Effectiveness Ad 1 Average Standard deviation Sample size (consumers) 01 Ad 2 63.2 68.1 7.9 113 Ad 3 53.5 9.2 97 105