1. In a study on female athletes, researchers measured the number of 60-pound bench presses each

woman performed (before fatigue), obtaining an average of 11.0, with an SD of 6.0. They also

measured the maximum weight each woman could bench press, obtaining an average of 79.9 pounds

with an SD of 14.4 pounds. The correlation between the number of 60-pound bench presses and the

maximum weight the women could bench press is 0.8. The scatter diagram is football-shaped.

(a) (6 points) Find the equation of the regression line for predicting the maximum weight a female

athlete can bench press from the number of 60-pound bench presses she can do.

(b) (4 points) Estimate the maximum weight a female athlete can bench press if she can do 16

60-pound bench presses.

(c) (2 points) Put a give-or-take number (r.m.s error) on your answer in part (b).

(d) (4 points) Would you be surprised if someone told you the woman in part (b) could lift a

maximum of 80 pounds? Explain.

(e) (4 points) Draw the regression line on the scatter diagram provided below.

0 5

Subject | Mathematics |

Due By (Pacific Time) | 06/13/2013 09:00 am |

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