help please

8. [10.22 Points] DETAILS 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 50 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? Opt=l17 Opus? Once? Quits] (b) The town of Leadvilie, 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 atlem ate hypothesis? 0 ,u i 8.7 Opt=3.7 Opus? 0 {4:83 (o) Suppose you made an engine modification and you think the average time to accelerate from 0 to 60 miles per hour is reduced. What would you use for the alternate hypothesis? Once? Omar Op=a7 Omen (d) For each of the tests in parts {b} and (c), would the P-value area be on the left. on the right, or on both sides of the mean? 0 left; right O both; lea 0 right; left 0 left: both