Question: A student conducted a study and reported that the 95% confidence interval for the mean ranged from 46 to 54. He was sure that the

A student conducted a study and reported that the 95% confidence interval for the mean ranged from 46 to 54. He was sure that the mean of the sample was 50, that the standard deviation of the sample was 16, and that the sample size was at least 30, but he could not remember the exact number. Can you help him out?

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