H13The test statistic is And p-value?

A company is developing a new high-performance wax for cross country ski racing. In order to justify the price marketing wants, the wax needs to be very fast. Specifically, the mean time to finish their standard test course should be less than 55 seconds for a former Olympic champion. To test it, the champion will ski the course 8 times. The champion's times are 56.8, 60.1, 51.7, 54.4, 45.7, 49.2, 52.9, and 43.9 seconds to complete the test course. Complete parts a and b below. . . . . . a) Should they market the wax? Assume the assumptions and conditions for appropriate hypothesis testing are met for the sample. Assume a = 0.05. What are the null and alternative hypotheses? Choose the correct answer below. O A. Ho: H 55 vs. HA: H = 55 O D. Ho: H = 55 vs. HA: H > 55 What is the value of the test statistic? K The test statistic is . (Round to two decimal places as needed.)