Mathematics
ericstroupe80
22

A day care program has an average daily expense of $75.00. The standard deviation is $15.00. The owner takes a sample of 64 bills. What is the probability the mean of his sample will be between $70.00 and $80.00? Step 1. Calculate a z-score for $70.00:

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(1) Answers
sassymissy

The z score of $70.00 = (70 - 75)/15 = -5/15 = -0.3333

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