9. Which of the following represents a null hypothesis? a. Does incorporating relaxation exercises into the daily practice routine of college vocal majors enhance their performance confidence? b. There will be no difference in rate of skill improvement between college gymnasts who practice meditation and those who do not. c. Class A high school basketball teams who employ a sports psychologist will have a higher proportion of wins over the course of the season than comparable teams who do not employ a sports psychologist. d. None of the above

9. Which of the following represents a null hypothesis? a. Does incorporating relaxation exercises into the daily practice routine of college vocal majors enhance their performance confidence? b. There will be no difference in rate of skill improvement between college gymnasts who practice meditation and those who do not. c. Class A high school basketball teams who employ a sports psychologist will have a higher proportion of wins over the course of the season than comparable teams who do not employ a sports psychologist. d. None of the above