Module 3 Exercise 2

What is the symbol for population variance?

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Which notations pertain to the sampling distribution of the sample means? (Check all that apply.)

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What is 3C2?

Given the population with the following data values: 1, 2, 3. Which of the following is NOT a possible sample of size n = 2 from this population?

• 1, 2

• 1, 3

• 2, 3

• 1, 1

What value will complete the this sample mean table?

Refer to the given sample mean table. Which of the following is the sampling distribution of the sample means?

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Complete the table to determine the mean of the sampling distribution of the sample means. Use the formula provided. Use 2 decimal places for the values in the last column.

• 1.5

• 2

• 2.5

• 3

Given the population with the following data values: 1, 2, 3. What is the population mean? Use the formula

 $\mu=\frac{\Sigma x}{N}$  

Complete the table to determine the variance of the sampling distribution of the sample means. Use the formula provided. Use 3 decimal places for the values in the last column.

• 0.166

• 0.160

• 0.170

• 0.164

If the variance of the sampling distribution of the sample means is 0.166, then what is the standard deviation of the sampling distribution of the sample means? (2 decimal places)

• 0.41

• 0.45

• 0.35

• 0.38