A digital camcorder repair service has set the goal not to exceed average of 5 working days from time the unit is brought in to the time repairs are completed. A random sample of 12 repair records showed following repair times (in days):
9, 2, 5, 1, 5, 4, 7, 5, 11, 3, 7, 2
(a) H0: μ≤ 5 days versus H1: μ> 5 days. Choose the right option.
Reject H0 if t < 1.796
Reject H0 if t >1.796
(b) Compute the t-value.
(c) The null hypothesis must be rejected.