On a random basis, Bob buys a small take-out coffee from one of two restaurants. As a statistics project in the month of May, he measured the temperature of each cup immediately after purchase, using an analog cooking thermometer. Assuming equal variances, is the mean temperature higher at Panera than at Bruegger's at α = .01?
Answer to relevant QuestionsA 20-minute consumer survey mailed to 500 adults aged 2534 included a $5 Starbucks gift certificate. The same survey was mailed to 500 adults aged 2534 without the gift certificate. There were 65 responses from the first ...Male and female students in a finance class were asked how much their last tank of gas cost. Can you conclude that on average males spent more on gas than females? (a) State the hypotheses for this test. (b) Show the ...Refer to Exercise 11.7. Which pairs of mean GPAs differ significantly (4 majors)? Exercise 11.7 Semester GPAs are compared for seven randomly chosen students in each class level at Oxnard University. 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 ...Below are grade point averages for 25 randomly chosen university business students during a recent semester. Research question: Are the mean grade point averages the same for students in these four class levels?
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