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51.A manager of an 800-room hotel wishes to study the time it takes to deliver luggage to a room. For 10 days, he collects data on delivery times which can be up to 20 per day. What measure of dispersion can he use to analyze this data?
52.Weigh-It-Right is producing a new brand of scales that measures body fat in addition to weight. Under testing conditions, the scale shows a consistent weight of 0.25 lbs. What is this an example of?
53.A national dairy farm is facing significant revenue losses due to customer returns and store rejections of their milk products. Executives wish to quantify the actual cost of poor quality on revenues. Cost of Poor Quality (COPQ) includes the following EXCEPT:
54.A marketing company claims that its customer return 12% of promotional surveys they conduct on a quarterly basis. To test this claim, a random sample of 1000 customers are sent a promotional survey. The significance level (a) of this study is set at 0.05. What does a significance level imply?
55.Researchers at a soap production company are interested in the purchasing differences amongst 3 of their products (Product 1, Product 2, and Product 3). They state a null hypothesis that there are no differences between mean sales of the 3 products. The alternate hypothesis is stated as:
