The following applies to Questions 1 - 6.
Nine runners agree to participate in a study on two brands of shoes on the time to run a race. The runners are asked to run a 10-kilometer race on each of two consecutive weeks. In one of the races, the runners wear one brand of shoe and in the other a different brand (with the order randomly determined). The differences in running times (Brand A minus Brand B) have a mean of -0.27 minutes with a standard deviation of 0.4 minutes.
Question 1 (1 point)
Which of the following statements is/are true?
(You must select all of the correct answer choices and none of the incorrect answer choices in order to receive credit. No partial credit will be given.)
In order to conduct a matched pairs t test, we must assume that differences in running times are normally distributed.
For any two runners, running times with Brand A shoe are independent.
For each runner, running times with Brand A shoe and Brand B shoe are independent.
In order to conduct a matched pairs t test, we must assume that running times with Brand A shoe and Brand B shoe are both normally distributed.
Question 2 (1 point)