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?
MATLAB: An Introduction with Applications
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ISBN:9781119256830
Author:Amos Gilat
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Chapter1: Starting With Matlab
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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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