A First Course in Probability (10th Edition)
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ISBN: 9780134753119
Author: Sheldon Ross
Publisher: PEARSON
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6. General: Gathering Data Which technique for gathering data (sampling, experiment, simulation, or census) do you think was used in the following studies?
• (A)An analysis of a sample of 31,000 patients from New York hospitals sug- gests that the poor and the elderly sue for malpractice at one-fifth the rate of wealthier patients (Journal of the American Medical Association).
• (B)The effects of wind shear on airplanes during both landing and takeoff were studied by using complex computer programs that mimic actual flight.
• (C)A study of all league football scores attained through touchdowns and field goals was conducted by the National Football League to determine whether field goals account for more scoring
• (D)An Australian study included 588 men and women who already had some precancerous skin lesions. Half got a skin cream containing a sunscreen with a sun protection factor of 17; half got an inactive cream. After 7 months, those using the sunscreen with the sun protection had fewer new precancer-ous skin lesions (New England Journal of Medicine).
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