The probability that a randomly selected pregnancy lasts

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Reference no: EM13603027

The probability that a randomly selected pregnancy lasts less than 149 days is approximately .3821.

The probability that the mean of a random sample of 21 pregnancies is less than 149 days is approximately .0846.

The probability that the mean of a random sample of 55 pregnancies is less than 149 days is appox ??? (round to 4 decimal places as needed)

Reference no: EM13603027

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