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The lengths of pregnancies have a mean of 266 days and a standard deviation of 16...

The lengths of pregnancies have a mean of 266 days and a standard deviation of 16 days. What is the probability a pregnancy lasts between 250 days and 298 days?

a. 84.1%

b. 68%

c. 95%

d. 81.5%

Same setup. A pregnancy lasts 284 days. What percentile of pregnancy lengths is in?

a. 84.1%

b. 16%

c. 87%

d. 95%

math   Statistics-And-Probability   
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Answer #1

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