A local athletic facility offers a four-week training course, hoping to increase athletes’ running speeds. Thirty-five volunteer athletes are timed, in seconds, running a 50 -yard dash before the training program begins and then again after the program is complete. The difference in running times open paren before training minus after training close paren is calculated for each athlete. What are the hypotheses the facility should use?
Answer
A
ratio of cap h sub 0 to mu sub first is equal to mu sub second ; ratio of cap h sub alpha to mu sub first is less than mu sub second
B
ratio of cap h sub 0 to mu sub before is equal to mu sub after ; ratio of cap h sub alpha to mu sub before is less than mu sub after
C
ratio of cap h sub 0 to mu sub diff is equal to 0 ; ratio of cap h sub alpha to mu sub diff is greater than 0
D
ratio of cap h sub 0 to mu sub diff is equal to 0 ; ratio of cap h sub alpha to mu sub diff is less than 0