An electronics manufacturing process has a scheduled mean completion time of 70 minutes. It is claimed that, under new management, the mean completion time, H, Is less than 70 minutes. To test this claim, a random sample of 15 completion times under new management was taken, The sample had a mean completion time of 64 minutes and a standard deviation of 12 minutes. Assume that the population of completion times under new management is normally distributed. At the 0. 1 level of significance, can it be concluded that the mean completion time, u, under new management is less than the scheduled mean? Perform a one-tailed test. Then complete the parts below. Carry your intermediate computations to three or more decimal places and round your answers as specified in the table. (If necessary, consult a list of OO formulas.) (a) State the null hypothesis Ho and the alternative hypothesis H. P D H :0 X S H :0 (b) Determine the type of test statistic to use. (Choose one) V O-0 050 020 (c) Find the value of the test statistic. (Round to three or more decimal places.) (d) Find the critical value. (Round to three or more decimal places.) X 3 ? (e) At the 0.1 level, can it be concluded that the mean completion time under new management is less than the scheduled mean? Check Save For Later Submit Assignment