Students in Statistics Classes Were Asked Whether They Preferred a 10-Minute

Multiple Choice

Students in statistics classes were asked whether they preferred a 10-minute break or to allow them go out of class 10 minutes early. In a sample of 150 students, 40 preferred a 10-minute break, 80 preferred going out 10 minutes early, and 30 had no preference. We want to determine if there is a difference in students' preferences. The null hypothesis that is being tested is

A) H₀: μ = 150.
B) H₀: μ = 75.
C) H₀: p = .2.
D) H₀: p = .5.