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Quiz 3 Sp 2007 KEY - the population mean by more than.618...

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ECON 2843 Name KEY Quiz 3 Spring 2007 ID # Students must show all work on problems that involve calculation. Questions 1 through 3 refer to the following. The U.S. Environmental Protection Agency publishes figures on solid waste generation in the United States. One year, the average number of waste generated per person per day was 3.58 pounds. Suppose the daily amount of waste generated per person is normally distributed with a standard deviation of 1.04 pounds. 1. Of the daily amounts of waste generated per person, 67.72% would be greater than what amount? a. .3228 b. .46 c. .5080 d. 3.10 * e. 4.0584 2. What is the probability that a randomly selected person will generate between 2.72 and 3.14 average pounds of waste per day? 3. If 8 people are chosen at random, what is the probability that sample mean will differ from
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Unformatted text preview: the population mean by more than .618 pounds? a. 4.65 % b. 9.30 % * c. 27.76 % d. 55.52 % e. 59.42 % f. 72.25 % 1 4. The Zimmerman Agency conducted a study for Residence Inn by Marriott of business travelers who take trips of five nights or more. According to this study, 37% of these travelers enjoy sightseeing more than any other activity that they do not get to do as much at home. Suppose 120 randomly selected business travelers who take trips of five nights or more are contacted. What is the probability that more than 50 enjoy sightseeing more than any other activity that they do not get to do as much at home? .1446 5. Refer to question 4. For the sample of 120 business travelers, what is the interquartile range? 7.14 2...
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