Solve the problem. Round the standard score to the nearest tenth before using the z-score tables. Express your answer as
a percent rounded to hundredths of a percent.
-The lengths of human pregnancies are normally distributed with a mean of 268 days and a standard deviation of 15 days.Assume that a random sample of 25 pregnant woman is selected and the mean is computer. What percentage of sample means will be between 265 and 271 days?
A) 99.74%
B) 15.87%
C) 68.26%
D) 84.13%
Correct Answer:
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Q44: The scores on a certain test are
Q45: Solve the problem. Round the standard score
Q46: A bank's loan officer rates applicants for
Q47: Find the requested mean or standard deviation.
-The
Q48: Human body temperatures are normally distributed with
Q49: Find the requested mean or standard deviation.
-The
Q50: Solve the problem. Round the standard score
Q51: Solve the problem. Round the standard score
Q52: Solve the problem. Round the standard score
Q54: Solve the problem. Round the standard score
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