In a random sample of 120 families that use day care, how many pay more than $7250
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In a random sample of 120 families that use day care, how many pay more than $7250 annually for day care per child?
Assume the annual day care cost per child is normally distributed with a mean of $8000 and a standard deviation of $1500.
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Related Book For 
A Survey of Mathematics with Applications
ISBN: 978-0134112107
10th edition
Authors: Allen R. Angel, Christine D. Abbott, Dennis Runde
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