Suppose that National Motors randomly selects a sample of n = 91ZX-900s. The company records the stopping distance of each of theseautomobiles and calculates the mean and standard deviation of thesample of n = 81 stopping distances to be ȳ = 57.8feet and s =6.02feet.
1. Conduct hypothesis test
H0 :μ=60, Ha :μ<60.
Set α = 0.5. And calculate the p-value.
