For a marketing class term project, Bob is investigating whether college seniors eat less frequently in fast-food chains than college freshmen. He asked 11 freshmen and 11 seniors to keep track of how many times they ate in a fast-food restaurant during the month of October. Assuming equal variances, can you conclude that the mean is significantly smaller for college seniors at the 5 percent level of significance?
Answer to relevant QuestionsUsing the following Excel results: (a) What was the overall sample size? (b) How many groups were there? (c) Write the hypotheses. (d) Find the critical value of F for α = .05. (e) Calculate the test statistic. (f) Do the ...11.14 Refer to Exercise 11.8. Which pairs of mean weekly sales differ signi cantly (4 stores)? Exercise 11.8 Sales of People magazine are compared over a 5-week period at four Borders outlets in Chicago. Do the data show a ...Refer to Exercise 11.8. Are the population variances the same for weekly sales (4 stores)? Exercise 11.8 Sales of People magazine are compared over a 5-week period at four Borders outlets in Chicago. Do the data show a ...Oxnard Petro, Ltd., has three suppliers of catalysts. Orders are placed with each supplier every 15 working days, or about once every 3 weeks. The delivery time (days) is recorded for each Deliveries2 order over 1 year. Are ...An MBA director examined GMAT scores for the first 10 MBA applicants (assumed to be a random sample of early applicants) for four academic quarters. Research question: Do the mean GMAT scores for early applicants differ by ...
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