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Suppose the lengths of human pregnancies are normally distributed with 266 days and a = 16 days. Complete parts (a) and (b) b
Suppose the lengths of human pregnancies are normally distributed with = 266 days and a = 16 days. Complete parts (a) and (b)
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Solution :

Given that ,

mean = \mu = 266

standard deviation = \sigma =16

a) P(x < 230) =0.0122

A) The proportion of human pregnancies that last less than 230 days is 0.0122

B) The probability that a randomly selected human pregnancy lasts less than 230 days is 0.0122

b) P(235 < x < 290) =0.9069

B) The proportion of human pregnancies that last between 235 and 290 days is 0.9069

A) The probability that a randomly selected human pregnancy lasts between 235 and 290 days is 0.9069

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