Findout the confidence interval of true mean

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Find the 90% confidence interval of the true mean.

A study of 415 kindergarten students showed that they have seen on average 5000 hours of television. If the sample 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?

Reference no: EM1316888

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