Assume that the mean time for certain car to go from 0 to 60 miles per hour was 8.6 seconds. Assume that you want to set up statistical test to challenge the claim of 8.6 seconds. What would you employ for the null hypothesis?
a. Ho : µ = 8.6 seconds
b. Ho : µ ? 8.6 seconds
c. Ho : µ ? 8.6 seconds
d. Ho : µ < 8.6 seconds
e. Ho : µ > 8.6 seconds