A design engineer at Sperling Manufacturing (a supplier of highquality ball bearings) claims a new machining process can result in a higher daily output rate. Accordingly, the production group is conducting an experiment to determine if this claim can be substantiated. The mean and the standard deviation of bearings in a sample of 8 days' output using the new process equal 2613.63 and 90.78, respectively. A similar sample of 10 days' output using the old process yields the mean and the standard deviation of 2485.1 0 and 148.22, respectively. Assume normally distributed populations and equal population variances for each process. Assuming the signicance level for the test is to be 0.05 (Le. 5%) and considering new process as population 1 and old process as population 2, what statistical decision should be made? 0 a. Reject the null hupothesis. O b'Accept the null hypothesis. 0 C' Reject the alternative hypothesis. 0 d' Do not reject the null hypothesis