Question

As an aid to the establishment of personnel requirements, 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 81 different 24-hour periods and determines the number of admissions for each. For this sample, the mean number of people was 396, and the standard deviation was 63. Estimate the mean number of admissions per 24-hour period with a 99% confidence interval.

Answer 1

Sol. As we broui illat, ette foruta fou une calculation is :- Value at Risk (Var) - zx fid ulere M = mean 2 a value of a from vorral distribution table at certains confidence interval 2de Hardoid deviator Anithe Given froblem, ethe directora uvishes to climate mean no. of people admitted to enredgeney room during 24-hour period, For ther, out of sample calculation, we have a - Mean no. of people tell) 2 34 f Standard deviation 10 ) 2 63 The value of 2 (by testing vinto roural distribution table lat 1911.confidence Internal shall be 2.33. Therefore, Out VAR shall be :- u - zt sid • 396 -- 2.33x63 = 396-146.79 = 396-147 > 249( persons) It will de interpreted as, the mean number of admissions pee 24-hours period shall be maximum of 249 persons.