A marketing study conducted in a large city shows that of 100 married women who

Question

A marketing study conducted in a large city shows that of 100 married women who work full time. 43 dinner at a restaurant at least one night a week during a typical workweek, while 27 out of sample of 100 married women who do not work full time eat dinner out at least once a weak. We want to know whether there is a difference between the two groups of married woman in the proportion who eat dinner out at least once a weak. What statistical test would be most appropriate to use? A. a t-test involving two sample proportions B. a t-test involving two sample proportions C. a t-test involving one sample proportions D. a t-test involving one sample proportions E. an F-test involving multiple means A bank is negotiating a loan on a motel which the motel owner says has an average daily revenue of at $35, 048. In the event the average is not at least $35, 048, the bank will ask the motel owner for additional collateral for the loan as protection against loan default. The loan officer has a report of the motel's daily average revenue for the past thirty days. The revenue are approximately normally distributed. What statistical lest should the loan officer use to decide whether to require additional collateral for die loan? A. a f-test involving two sample means B. a z-test involving two sample mean C. a t-test involving one sample mean D. a z-test involving one sample mean E. an F-test involving multiple means To examine effects of the work environment on attitude toward work, an industrial psychologist randomly assigns a group of 18 recently hired sales trainees to three rooms, Each room is identical except for wait color. One is light green, one is light blue, and the third is deep red. During the week-long training program, the trainees stay mainly in their respective assigned rooms. At the end of the program, an attitude scale is used to measure each trainee's attitude toward work, where a low score indicates a poor attitude, a high score indicates a good attitude The following are obtained: Based on this data, the industrial psychologist wants to determine whether there is evidence that the color of the room has an effect on attitude toward work. What statistical test should he used? A) a chi-square test B. a z-test for the difference in proportions C. a z-test for the difference in means D. a z-test for the difference in means E. None of these A state transportation official claims that the mean waiting time at exit booths from a toll road the capitol is no more than 0.40 minutes, for a sample of 35 motorists exiting the toll road, it was found that the mean waiting time was 0 46 minutes with a standard deviation of 0.16 minutes' lf we want to determine whether we can reject the official's claim, what statistical test should be used? A. a t test involving two sample means B a z test involving two sample means C. a t test involving one sample means D. a z test involving one sample means E. an f test involving multiple means

Explanation / Answer

34) B. a z test involving two sample proportions

35.C. a t test involving one sample mean

36. B. an F test for the difference in means

37. C. a t test involving one sample mean

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