The Director of a Hospital Wishes to Estimate the Mean $\bar { x } = 17.2$

question 25

Multiple Choice

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 49 different 24-hour periods and determines the number of admissions for each. For this sample, $\bar { x } = 17.2$ and $s ^ { 2 } = 25$ . Estimate the mean number of admissions per 24 -hour period with a $90 \%$ confidence interval.

• A) \(17.2 \pm .643\)
• B) \(17.2 \pm .168\)
• C) \(17.2 \pm 5.875\)
• D) \(17.2 \pm 1.175\)

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