Mathematics, 22.02.2021 19:10 alicciardone01
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 64 different 24-hour periods and determines the number of admissions for each. For this sample, X ¯ = 396 and S = 100. Which of the following assumptions is necessary for a confidence interval to be valid?
A) The population sampled from has an approximate normal distribution.
B) The population sampled from has an approximate t distribution.
C) The mean of the sample equals the mean of the population.
D) None of these assumptions are necessary.
Answers: 2
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As an aid to the establishment of personnel requirements, the director of a hospital wishes to estim...
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