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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 …

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 …
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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?

User Mike Lutz
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Add 75 and 15 then minus 64. Add 70 and 80 then add the answers
User Sueann
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