## Question

###### . A kinesiology major wanted to predict O2max based on the mile run. To develop the...

**.** A kinesiology major wanted to predict O2max based on the mile run. To develop the regression equation, she obtained O2max values (ml/kg/min) in the exercise physiology laboratory on 18 students. Two days later, she measured the same 18 students on the mile walk–run with scores reported as total time in seconds. The data are as follows.

a. Using a computer, calculate the means, standard deviation, and correlation coefficient between the two variables.

b. What is the probability that the correlation coefficient happened by chance? Why is the coefficient negative?

c. What is the slope, the *Y*-intercept, and the standard error of the estimate for the regression line?

d Estimate V.O2max for a person who runs the mile in 540 seconds. If you wanted your estimate to be accurate at the 95% LOC, what is the error factor in your estimate?