Suppose that the mean time for a certain car to go from 0 to

Suppose that the mean time for a certain car to go from 0 to 60 miles per hour was 7.8 seconds. Suppose that you want to test the claim that the average time to accelerate from 0 to 60 miles per hour is longer than 7.8 seconds. What would you use for the alternative hypothesis?

Select one:

a. H₁ : m < 7.8 seconds

b. H₁ : m > 7.8 seconds

c. H₁ : m ? 7.8 seconds

d. H₁ : m ? 7.8 seconds

e. H₁ : m = 7.8 seconds

Solution

Since we need to find if the average time is longer than 7.8 seconds, so we use

H1: m>7.8 seconds