Question

I. The correlation between the foot lengths of fathers and their (adult) sons, measured in inches, is r tells us that 0.92. This A. fathers with small feet tend to have sons with small feet. B. fathers with small feet tend to have sons with large feet. C. sons have, on the average, feet that are 0.92 times the length of their father's. D. 92 percent of all sons have feet that are bigger than their father's. E. there is almost no connection between the foot lengths of fathers and sons 2. An educational psychologist gathers data from a sample of college students. He finds the correlation between grade point average and class attendance to be 0.60, and he finds the correlation between grade point arerage and amount of time spent playing video games to be -0.60. What can the educational psychologist conclude about these correlations? A. The correlation ofr-0.60 is stronger than the correlation of r0.60 B. The correlation of r0.60 is just as strong as the correlation of r- -0.60 C. The correlation ofr 0.60 is weaker than the correlation of r-0.60 D. We cannot know which correlation is stronger without knowing the size of the sample 3. A researcher wants to study how the Weight (in pounds) of a Greyhound dog relates to its Top Speed (in miles per hour). We take a small sample of greyhounds, and produce the following regression equation to help explain the relationship between these two variables Predicted Top Speed- 33.75 + 0.125*(Weight) Which of the following is a correct interpretation of the slope of this regression equation? A. As a greyhound's Top Speed goes up by 1 mile per hour, we predict that its Weight will increase by 0.125 eight will increase by 33.75 C. As a greyhound's Weight goes up by 1 pound, we predict that its Top Speed will go up by 0.125 miles per pounds. B. As a grevhound's Top Speed goes up by 1 mile per hour, we predict that its W pounds. our.

Answer 1

A. fathers with small feet tend to have sons with small feet.

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