An electronics manufacturing process has historically had a mean completion time of minutes. It is claimed that, due to improvements in the process, the mean completion time, , is now less than minutes. A random sample of completion times using the new process is taken. The sample has a mean completion time of minutes, with a standard deviation of minutes. Assume that completion times using the new process are approximately normally distributed. At the level of significance, can it be concluded that the population mean completion time using the new process is less than minutes? Perform a one-tailed test. Then complete the parts below.