Question

According to the National Association of Childcare Resources and Referral Agencies, the average cost of care for an infant in a child care center in Delaware was $ 8,769 a year. Assume this cost follows a normal distribution with a standard deviation of $ 925.
a. What is the probability that a randomly selected childcare center in Delaware costs
1. More than $ 8,000 per year for infant care?
2. More than $ 9,000 per year for infant care?
3. Between $ 8,500 and $ 9,500 per year for infant care?
b. Use Excel or PHStat to confirm the answers in part a.
c. Determine the rate a child care center that wishes to be in the 60th percentile in the state of Delaware should charge for an infant.


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  • CreatedJuly 17, 2015
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