1. estimate whether the correlation coefficient between the following variables is positive, negative, or near zero.
a. height of vertical jump and distance of long jump – positive
b. height of vertical jump and time of 40-yard dash – negative
c. height of vertical jump and average speed of 40-yard dash – negative
d. height of vertical jump and free-throw shooting percentage – near zero
e. free-throw shooting percentage and three-point shooting percentage – positive
f. one-repetition maximum in bench press and distance in shot put – positive
g. age beyond 50 years and one-repetition maximum in bench press – negative
h. hours watching television and body mass index – positive
i. age beyond 50 years and total-body muscle mass – negative
j. total-body muscle mass and resting energy expenditure – negative