[See Steps] A random sample of 76 four-year-olds attending day care centers showed that the yearly tuition averaged $3648. The standard deviation of the
Question: A random sample of 76 four-year-olds attending day care centers showed that the yearly tuition averaged $3648. The standard deviation of the sample was $630, and the sample size was 50. 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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