The depletion time of a vital resource in a production process is believed to be normally distributed with a mean of u = 30 minutes and a standard deviation of a = 3.2 minutes. A recently appointed production team introduced new efficiencies that they claim make the depletion of the resource slower. To test this claim, a random sample of n = 24 production shifts were taken and the observed mean depletion time of the resource was :2 = 30.5 minutes. a. In testing the production team's claim, select the appropriate alternative hypothesis, H1 or Ha: O > 30.5 on > 30 on a 30.5 om30 Op