The completion time for a production process is believed to be normally distributed with a mean of u = 45 minutes and a standard deviation of o = 1.8 minutes. A recently appointed production team introduced new efficiencies that they claim make the completion of the process faster. To test this claim, a random sample of n = 22 production shifts were taken and the observed mean completion time was I = 44.6 minutes. a. In testing the production team's claim, select the appropriate alternative hypothesis, H1 or Ha : Ou 44.6 Ou # 44.6 Ou > 45 Ou