The completion time for a production process is believed to be normally distributed with a mean of uu = 47 minutes and a standard deviation of o = 2.2 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 = 17 production shifts were taken and the observed mean completion time was a = 45.9 minutes. a. In testing the production team's claim, select the appropriate alternative hypothesis, H1 or Ha : Ou + 45.9 Ou > 45.9 Ou 47 ON * 47 OM