Question: The scatterplot and the model in Fig. 58 describe the association between years and womens 200-meter run record times (in seconds). a. Is the association

The scatterplot and the model in Fig. 58 describe the association between years and women€™s 200-meter run record times (in seconds).

a. Is the association positive, negative, or neither? What does that mean in this situation?
b. Estimate the slope of the model. What does it mean in this situation?
c. Estimate how much the record time decreased over 15 years.
d. A student says the result you found in part (c) describes how much the record time will decrease in the next 15 years. What would you tell the student?

Years versus Women's 200-Meter Run Record Times 24 23.5 10 21.5 21 1950 1960 70 901990 Year

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