The director of a hospital wishes to estimate the mean number of people who are admitted to the emergency room…

The director of a hospital wishes to estimate the mean number of people who are admitted to the emergency room during a 24-hour period. The director randomly selects 11 diffrent 24-hr periods and determines the number of admissions for each. The sample variance is 121. Estimate the mean number of admissions per 24-hour period with a 99% confidence level

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