QMB_COMBINED-1

# In a completely randomized anova other things equal

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Question 8   (4 points) In a completely randomized ANOVA, other things equal as the sample means get closer to each other, the  probability of rejecting the null hypothesis:  Student response: Percent Value Correct Response Student Response Answer Choices 100.0% a. Decreases 0.0% b. Increases 0.0% c. Is unaffected. Score: 0 / 4   Question 9   (4 points) The slope of the simple linear regression equation represents the average change in the value of the dependent  variable per unit change in the independent variable (X).  Student response: Percent Value Correct Response Student Response Answer Choices 100.0% 0.0% Score: 4 / 4   Question 10   (4 points) The correlation coefficient is the ratio of explained variation to total variation.  Student response: Percent Value Correct Response Student Response Answer Choices 0.0% 100.0% Score: 4 / 4

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Question 11   (4 points) If we are testing the hypothesis about the mean of a population of paired differences with samples of n1 = 10, n2 =  10, the degrees of freedom for the t statistic is ____.  Student response: Percent Value Correct Response Student Response Answer Choices 0.0% 0.0% 100.0% 0.0% 0.0% Score: 0 / 4   Question 12   (4 points) Which of the following is a violation of one of the major assumptions of the simple regression model?  Student response: Percent Value Correct Response Student Response Answer Choices 0.0% a. The error terms are  independent of each other. 0.0% b. Histogram of the residuals  form a bell-shaped,  symmetrical curve. 0.0% c. The error terms occur in a  random pattern over time. 100.0% d. As the value of x increases,  the value of the error term  also increases. Score: 4 / 4   Question 13   (4 points) For the same value X (independent variable), the confidence interval for the average value of Y (dependent  variable) is __________________ the prediction interval for the individual value of Y.  Student response: Percent Value Correct Response Student Response Answer Choices
0.0% 100.0% 0.0% 0.0% Score: 0 / 4   Question 14   (4 points) The correlation coefficient may assume any value between  Student response: Percent Value Correct Response Student Response Answer Choices 0.0% 0.0% 0.0% 100.0% 0.0% Score: 4 / 4

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