Paul wants to know if students in his class spend more time watching basketball or football on television. Paul has 13 women and 12 men record the numbers of hours they spent watching football and basketball during a seven-day period. What would be the df associated with the t test in this situation?
A) 13
B) 23
C) 24
D) 25

Question

Quizplus · Accepted Answer

The degrees of freedom (df) for a two-sample t-test is calculated by adding the sample size of both groups and subtracting 2. In this case, the sample size of students who watched football is 13 + 12 = 25, and the sample size of students who watched basketball is also 25. Subtracting 2 results in 24 degrees of freedom, making the correct answer C) 24.

Paul Wants to Know If Students in His Class Spend