Answer to Question #340368 in Statistics and Probability for Ally

Question

Present complete solutions for each item. Illustrate the normal curve if possible.

1. A population consists of six values (6, 9, 12, 15, 18, and 21).

a. Select a random sample of size 3. Explain the random sampling that you used.

b. How many possible samples can be drawn?

c. List all possible samples and compute the mean of each sample.

d. Construct a frequency distribution of the sample means obtained in step 2 including

x̅; f; P(x̅); ̅x ⋅ P(x̅); ̅x²⋅ P(x̅); ΣP(x̅); Σx̅⋅ P(x̅) and Σx̅²⋅ P(x̅).

e. Determine the mean, variance and standard deviation of the sample mean.

Answer 1

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