ch07 SOLUTION.pdf

# ch07 SOLUTION.pdf - Chapter 7 Sampling and Sampling...

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Chapter 7: Sampling and Sampling Distributions 1 Chapter 7 Sampling and Sampling Distributions SOLUTIONS TO PROBLEMS IN CHAPTER 7 7.1 a) i. A union membership list for the company. ii. A list of all employees of the company. b) i. White pages of the telephone directory for Utica, New York. ii. Utility company list of all customers. c) i. Airline company list of phone and mail purchasers of tickets from the airline during the past six months. ii. A list of frequent flyer club members for the airline. d) i. List of boat manufacturer's employees. ii. List of members of a boat owners association. e) i. Cable company telephone directory. ii. Membership list of cable management association. 7.4 a) Size of motel (rooms), age of motel, geographic location. b) Gender, age, education, social class, ethnicity. c) Size of operation (number of bottled drinks per month), number of employees, number of different types of drinks bottled at that location, geographic location. d) Size of operation (sq.ft.), geographic location, age of facility, type of process used. 7.5 a) Under 21 years of age, 21 to 39 years of age, 40 to 55 years of age, over 55 years of age. b) Under \$1,000,000 sales per year, \$1,000,000 to \$4,999,999 sales per year, \$5,000,000 to \$19,999,999 sales per year, \$20,000,000 to \$49,000,000 per year, \$50,000,000 to \$99,999,999 per year, over \$100,000,000 per year. c) Less than 2,000 sq. ft., 2,000 to 4,999 sq. ft., 5,000 to 9,999 sq. ft., over 10,000 sq. ft. d) East, southeast, midwest, south, southwest, west, northwest. e) Government worker, teacher, lawyer, physician, engineer, business person, police officer, fire fighter, computer worker. f) Manufacturing, finance, communications, health care, retailing, chemical, transportation. 7.6 n = N/k = 100,000/200 = 500 7.7 N = n K = 825 7.8 k = N/n = 3,500/175 = 20 Start between 0 and 20. The human resource department probably has a list of company employees which can be used for the frame. Also, there might be a company phone directory available. 7.9 a) i. Counties ii. Metropolitan areas b) i. States (beside which the oil wells lie) ii. Companies that own the wells c) i. States ii. Counties 7.10 Go to the district attorney's office and observe the apparent activity of various attorney's at work. Select some who are very busy and some who seem to be less active. Select some men and some women.

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• Summer '18
• Keyur Popat
• Harshad number, µ, σ, PROB, table a.5

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