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. To test the null hypothesis, the appropriate probability distribution to use is
A) normal.
B) chi-square.
C) t distribution.
D) binomial.

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The Answer of 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. To test the null hypothesis, the appropriate probability distribution to use is
A) normal.
B) chi-square.
C) t distribution.
D) binomial.

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