Game performance of water polo players. Refer to the Biology of Sport (Vol. 31, 2014...

Game performance of water polo players. Refer to the Biology of Sport (Vol. 31, 2014) study of the physiological performance of top-level water polo players, Exercise 9.24 (p. 513). Recall that the in-game heart rate (y, expressed as a percentage of maximum heart rate) of a player was modeled as a straight-line function of the player’s maximal oxygen uptake (x, VO₂max). A researcher desires an estimate of the average in-game heart rate of all top-level water polo players who have a maximal oxygen uptake of 150 VO₂max. a. Which interval is desired by the researcher, a 95% prediction interval for y or a 95% confidence interval for E(y)? Explain.

b. Use statistical software to compute the desired interval.

c. Give a practical interpretation of the interval.

Reference: Exercise 9.24

a. Give the equation of the least squares line.

b. Give a practical interpretation (if possible) of the y-intercept of the line.

c. Give a practical interpretation (if possible) of the slope of the line.