Assume that newborn girls have birth weights with a mean of 3022 grams and a standard deviation of 716 grams. A random sample of 100 newborn girls is obtained and they have a mean birth weight of 2830 grams. What is the probability of randomly selecting another 100 newborn girls and getting a mean birth weight that is 2830 grams or lower? Does it seem like a sample mean of 2830 grams is unusual? The probability of getting a mean birth weight that is 2830 grams or lower is (Round to four decimal places as needed.)

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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Assume that newborn girls have birth weights with a mean of 3022 grams and a standard deviation of 716
grams. A random sample of 100 newborn girls is obtained and they have a mean birth weight of 2830 grams.
What is the probability of randomly selecting another 100 newborn girls and getting a mean birth weight that is
2830 grams or lower? Does it seem like a sample mean of 2830 grams is unusual?
The probability of getting a mean birth weight that is 2830 grams or lower is
(Round to four decimal places as needed.)
Transcribed Image Text:Assume that newborn girls have birth weights with a mean of 3022 grams and a standard deviation of 716 grams. A random sample of 100 newborn girls is obtained and they have a mean birth weight of 2830 grams. What is the probability of randomly selecting another 100 newborn girls and getting a mean birth weight that is 2830 grams or lower? Does it seem like a sample mean of 2830 grams is unusual? The probability of getting a mean birth weight that is 2830 grams or lower is (Round to four decimal places as needed.)
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