Can someone please explain these answers? Thank you

2 Points] DETAILS PREVIOUS ANSWERS BBUNDERSTAT12 8.1.018. MY NOTES ASK YOUR TEACHER Consumer Reports stated that the mean time for a Chrysler Concorde to go from 0 to 60 miles per hour was 8.7 seconds. (a) If you want to set up a statistical test to challenge the claim of 8.7 seconds, what would you use for the null hypothesis? Op = 8.7 OR 8.7 (b) The town of Leadville, Colorado, has an elevation over 10,000 feet. Suppose you wanted to test the claim that the average time to accelerate from 0 to 60 miles per hour is longer in Leadville (because of less oxygen). What would you use for the alternate hypothesis? OH = 8.7 OH > 8.7 OH = 8.7 OH 8.7 OH = 8.7 Ou