Question

10.

Because elderly people may have difficulty standing to have their heights measured, a study looked at predicting overall height from height to the knee. Suppose the correlation between height and knee height of elderly people is 0.82. Assume that both overall heights and knee heights are normally distributed. If an elderly person’s knee height is at the 39th percentile, what would be his/her percentile in height? (you should be able to find an exact answer).

Question 10 options:

A)

28th

B)

39th

C)

41st

D)

59th

E)

77th

11.

In simple linear regression analysis, a negative value of the correlation coefficient implies ___________.

Question 11 options:

A)	the intercept of the regression line is also negative.

B)	the intercept of the regression line is positive.

C)	the slope of the regression line is positive.

D)	the slope of the regression line is also negative.

E)	the slope and intercept of the regression line are both negative.

Answer 1

10)