Day Care Tuition A random sample of 50 four-year-olds attending day care centers
Chapter 7, Problem 18(choose chapter or problem)
Day Care Tuition A random sample of 50 four-year-olds attending day care centers provided a yearly tuition average of $3987 and the population standard deviation of $630. Find the 90% confidence interval of the true mean. If a day care center were starting up and wanted to keep tuition low, what would be a reasonable amount to charge?
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