In the past, the mean running time for a certain type of flashlight battery has been 8.1 hours. The manufacturer has introduced a change in the production method and wants to perform a hypothesis test to determine whether the mean running time has changed as a result. This test would be a (a) left-tailed test (b) two-tailed test (c) right-tailed test The test is (Enter a, b, or c) D Question 2 1 pts The recommended dietary allowance (RDA) of vitamin C for women is 75 milligrams per day. A hypothesis test is to be performed to decide whether adult women are, on average, getting less than the RDA of 75 milligrams per day. This test would be (a) left-tailed (b) two-tailed (c) right-tailed The test is (Enter a, b, or c) MacBook Air DII DD FR 20 388 F5 F6 F7 F2 F3 F4 % & 9 O 5 6 8