The national automobile repair franchise SuperSpeedyService claims it can complete a full 50,000 mile warrantee servicing in less than 5.5 hours. You are given the following data from a sample.
Sample size: 50
Population standard deviation: 1.2
Sample mean: 4.6
Formulate a hypothesis test to evaluate the claim.
Ho: µ = 5.5; Ha: µ ≠ 5.5
Ho: µ ≥ 5.5; Ha: µ < 5.5
Ho: µ > 5.5; Ha: µ ≤ 5.5
Ho: µ ≥ 4.6; Ha: µ < 4.6