Question
Suppose Coach Theil wants to measure the performance of all the track athletes. He wants to specially track the effect of their diet (Diet,
Suppose Coach Theil wants to measure the performance of all the track athletes. He wants to specially track the effect of their diet (Diet, measured in grams or g) on their field performance (Performance, measured in meters per second or m/s). Other coaches also include intensity of the field training (Training) and sufficient rest (Rest) as parameters while evaluating athletes' performances If Po denotes the intercept of the population regression line and other denotes the error term, which of the following equations describes the regression Coach Theil wants to run? OA. Performance Po+PTraining Training + Mother OB. Diet Po Prest X Performance + Mother OC. Performance Po Poet Diet + Mother OD. Diet Po+ Performance Performance + Mother The variables explicitly excluded from Coach Theil's population regression line are incorporated in Which of the following statements are true in describing the coefficients of the regression line when #o -6.2 m/s? (Check all that apply.) A. For a given diet X, the intercept shows the predicted value of performance of the athletes when the diet is zero. So, the value of intercept has a significant real-world relevance as it highlights the athletes' performance without a diet 4 B. For a given diet X, the intercept shows the predicted value of performance of the athletes when the diet is zero. As a zero diet is improbable, the value of the intercept would have no real-world meaning in this case. C. The slope. Diet, is the percentage change in performance due to a unit change in the diet D. The slope. Bniet, is the change in performance due to a unit change in the diet.
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