A group of students got the following scores in an achievement test: 9, 12 15, 18, 21 and 24. Consider samples of size 3 can be drawn from this population.
B. Construct the sampling distribution of the resulting sample means
The number of possible samples of size n=3 from a population of size N=6 is,
The sample means are derived from the formula,
The sampling distribution is as follows:
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