Question

A population consists of the following five values: 7, 7, 15, 34, 18.

a. Not available in Connect.

b. By listing all samples of size 3, compute the mean of the distribution of the sample mean and the population mean. Compare the two values. (Round the final answer to the nearest whole number.)

Sample means
Population mean
Both means are	(Click to select)  equal  not equal

c. Compare the dispersion in the population with that of the sample means. Hint: Use the range as measure of dispersion.

The dispersion of the population is  (Click to select)  greater  smaller  than that of the sample means.

Answer 1

b)

sample means = 16.2

population mean = 16.2

both means are same

c)

sd(Xbar) = sd(X) /sqrt(n)

The dispersion of the population is greater   than that of the sample means.

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