Question: Mean = 139 Standard Deviation = 14 days what is the probability that a random sample of 18 have a mean period of 134 days

Mean = 139

Standard Deviation = 14 days

what is the probability that a random sample of 18 have a mean period of 134 days or less?

the probability that the mean of a random sample of 18 pregnant people is less than 134 days approximately ____ (rounding to four decimal places)

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