A competitor claims to be able to complete a standard task in under an hour. For a random sample of 24 tasks, she averaged 56.8 minutes with a standard deviation of 7.7 minutes. What is the test statistic for this test? a. t = 1.79 b. t = 2.04 c. Z = 2.04 d. Z = 1.79 e e. None of the suggested answers are correct