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T F 1. Correlation...

T F 1. Correlation coefficients of positive 0.91 and negative 0.91 represent relationships between two variables that have equal strength but different directions.

T F 2. If the coefficient of correlation is 0.68, the coefficient of determination is 0.4624.

3. A hypothesis test is conducted at the .05 level of significance to test whether or not the population correlation is zero. If the sample consists of 25 observations and the correlation coefficient is 0.60, then what is the computed value of the test statistic?

A) 1.96

B) 2.07

C) 2.94

D) 3.60

4. Suppose the least squares regression equation is Y' = 1202 + 1,133X. When X = 3, what does Y' equal?

A) 5,734

B) 8,000

C) 4,601

D) 4,050

T F 5. The chi-square goodness-of-fit test can be applied if there are equal or unequal expected frequencies.

T F 6. In chi

T F 2. If the coefficient of correlation is 0.68, the coefficient of determination is 0.4624.

3. A hypothesis test is conducted at the .05 level of significance to test whether or not the population correlation is zero. If the sample consists of 25 observations and the correlation coefficient is 0.60, then what is the computed value of the test statistic?

A) 1.96

B) 2.07

C) 2.94

D) 3.60

4. Suppose the least squares regression equation is Y' = 1202 + 1,133X. When X = 3, what does Y' equal?

A) 5,734

B) 8,000

C) 4,601

D) 4,050

T F 5. The chi-square goodness-of-fit test can be applied if there are equal or unequal expected frequencies.

T F 6. In chi

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