Question 14 A sales representative who is on the road visiti…
Question 14 A sales representative who is on the road visiting clients thinks that, on average, he drives the same distance each day of the week. He keeps track of his mileage for several weeks and discovers that he averages 121miles on Mondays, 201 miles on Tuesdays, 168 miles on Wednesdays, 179 miles on Thursdays, and 101miles on Fridays. He wonders if this evidence contradicts his belief in a uniform distribution of miles across the days of the week. Is it appropriate to test his hypothesis using the Chi-square goodness-of-fit test? Choose the correct answer below.
Read DetailsUse the following narrative to answer questions 9– 13. At a…
Use the following narrative to answer questions 9– 13. At a major credit card bank, the percentages of people who historically apply for the Silver, Gold, and Platinum cards are 60%, 30%, and 10%, respectively. A random sample of 175 customers who responded to a recent promotion yielded 90 who applied for a Silver card, 50 who applied for a Gold Card, and 35 who applied for a Platinum card. You wish to determine if the sample provides evidence that there has been a change in preferences for the 3 types of cards. Question 9 Write the null hypothesis in proper form.
Read DetailsUse the following narrative and data to answer questions 30–…
Use the following narrative and data to answer questions 30– 31. A CEO is interested in comparing the effects of three different bottle designs (A, B, and C) on sales of a popular fabric softener. Fifteen supermarkets of equal sales potential are selected, and 5 of these supermarkets are randomly assigned to each bottle design. The number of bottles sold to customers in 24 hours at each supermarket is recorded. Assume all requirements for ANOVA are satisfied. Bottles Sold Design A Design B Design C Sample Size 5 5 5 Average 16.6 32.8 24.8 Variance 5.3 9.2 8.2 Std Dev 2.3 3.03 2.86 Question 30 Based on the above information, which of the following is correct?
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