1. A paired t test should be used where: a. There is a quantitative variable of

ID: 3390179 • Letter: 1

Question

1. A paired t test should be used where:

a. There is a quantitative variable of interest, the samples are dependent, and the standard deviation is unknown.

b. There is a qualitative variable of interest, the samples are dependent, and the standard deviation is unknown.

c. There is a quantitative variable of interest, the samples are independent, and the standard deviation is unknown.

d. There is a quantitative variable of interest, the samples of dependent, and the standard deviation is known.

2. Define the coefficient of determination (both mathematically and in words).

3. (True/False) Predictor (also called explanatory or independent) variables are a quantitative measurement from units or people of interest.

Answer the questions. Thank you.:)

CV for a population is:

CV for sample:

s/x bar*100%

3. Predictor (also called explanatory or independent) variables are a quantitative measurement from units or people of interest.FALSE.

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