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9. Sample data from the National Center for Health Statistics reveal that weights of American men aged 20- 29 have a mean of about 175 pounds and a standard deviation of about 35 pounds. For women the mean is about 140 pounds and the standard deviation is about 30 pounds. a. If these distributions are roughly normal, what percentage of men would you expect to weigh less than 150 pounds? Less than 200 pounds? Less than 250 pounds? b. Answer a. for women. c. Sample data from the National Center for Health Statistics reveal that the observed percentages in these ranges are 29.0%, 82.1%, and 96.2% for men, compared to 70.4%, 92.5%, and 99.0% for women. How well does the normal model predict these percentages?

9. Sample data from the National Center for Health Statistics reveal that weights of American men aged 20- 29 have a mean of about 175 pounds and a standard deviation of about 35 pounds. For women the mean is about 140 pounds and the standard deviation is about 30 pounds. a. If these distributions are roughly normal, what percentage of men would you expect to weigh less than 150 pounds? Less than 200 pounds? Less than 250 pounds? b. Answer a. for women. c. Sample data from the National Center for Health Statistics reveal that the observed percentages in these ranges are 29.0%, 82.1%, and 96.2% for men, compared to 70.4%, 92.5%, and 99.0% for women. How well does the normal model predict these percentages?

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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9. Sample data from the National Center for Health Statistics reveal that weights of American men aged 20-29 have a mean of about 175 pounds and a standard deviation of about 35 pounds. For women the mean is about 140 pounds and the standard deviation is about 30 pounds. a. If these distributions are roughly normal, what percentage of men would you expect to weigh less than 150 pounds? Less than 200 pounds? Less than 250 pounds? Answer a. for women. b. c. Sample data from the National Center for Health Statistics reveal that the observed percentages in these ranges are 29.0%, 82.1%, and 96.2% for men, compared to 70.4%, 92.5%, and 99.0% for women. How well does the normal model predict these percentages? 1000 ponning that come into his
Transcribed Image Text:9. Sample data from the National Center for Health Statistics reveal that weights of American men aged 20-29 have a mean of about 175 pounds and a standard deviation of about 35 pounds. For women the mean is about 140 pounds and the standard deviation is about 30 pounds. a. If these distributions are roughly normal, what percentage of men would you expect to weigh less than 150 pounds? Less than 200 pounds? Less than 250 pounds? Answer a. for women. b. c. Sample data from the National Center for Health Statistics reveal that the observed percentages in these ranges are 29.0%, 82.1%, and 96.2% for men, compared to 70.4%, 92.5%, and 99.0% for women. How well does the normal model predict these percentages? 1000 ponning that come into his
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