Quiz 12 :
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Q02 Q02 Q02
Suppose a simple random sample of five hospitals is to be drawn from a population of 20 hospitals. There are 15,504 different samples of size 5 that can be drawn. The relative frequency distribution of the values of the mean of these 15,504 different samples would specify the of the mean.
Q38 Q38 Q38
When determining the sample size, if the population standard deviation, s, is unknown and an estimate is used, the standard deviation should be re- estimated once the sample has been drawn. Next a revised confidence interval should be calculated to determine the precision level actually obtained.