Consumer reports stated that the mean time for a ChryslerConcorde to go from 0 t

Question

Consumer reports stated that the mean time for a ChryslerConcorde to go from 0 to 60 miles per hour was 8.7seconds. a. If you want to set up a statistical test to challenge theclaim of 8.7 seconds, what would you use for the nullhypothesis? b. The town of Leadville, Co, has an elevationover 10,000feet. Supose you wanted to test the claimthat the average time toaccerlate from 0 to 60 miles for the alternate hypothesis? c. Suppose you made an engine modification and you think thatthe average time to accleerate from 0 to 60 miles per hour has beenreduced. What would you use for the alternate hypothesis? d. For each of the tests in parts, b and c, would the P- valuearea be on the left or on the rght or on both sides of the mean?Explain your answer? Consumer reports stated that the mean time for a ChryslerConcorde to go from 0 to 60 miles per hour was 8.7seconds. a. If you want to set up a statistical test to challenge theclaim of 8.7 seconds, what would you use for the nullhypothesis? b. The town of Leadville, Co, has an elevationover 10,000feet. Supose you wanted to test the claimthat the average time toaccerlate from 0 to 60 miles for the alternate hypothesis? c. Suppose you made an engine modification and you think thatthe average time to accleerate from 0 to 60 miles per hour has beenreduced. What would you use for the alternate hypothesis? d. For each of the tests in parts, b and c, would the P- valuearea be on the left or on the rght or on both sides of the mean?Explain your answer?

Explanation / Answer

Consumerreports stated that the mean time for a Chrysler Concorde to gofrom 0 to 60 miles per hour was 8.7 seconds.

a. If youwant to set up a statistical test to challenge the claim of 8.7seconds, what would you use for the nullhypothesis?
{Null Hypothesis} = { H0: Mean 0-to-60 Acceleration TimeEQUALS 8.7 sec }

b. The townof Leadville, Co, has an elevationover 10,000 feet. Supose youwanted to test the claimthat the average time to accerlate from 0to 60 miles for the alternate hypothesis?
{AlternateHypothesis} = { Ha: Mean0-to-60 Acceleration Time NOT= 8.7 sec }

c. Supposeyou made an engine modification and you think that the average timeto accelerate from 0 to 60 miles per hour has been reduced. Whatwould you use for the alternatehypothesis?
{Alternate Hypothesis} = { Ha: Mean 0-to-60 Acceleration Time IsLESS THAN 8.7 sec }

d. For eachof the tests in parts, b and c, would the P- value area be on theleft or on the right or on both sides of the mean? Explain youranswer?
{Item B} ---> { P-Value Area On BOTHSides: To Test Both Less & Greater Than 8.7 sec}
{Item C} ---> { P-Value Area On LEFTSide: To Test Only Less Than 8.7sec }

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