You wish to test the following daim (Ha) at a significance level of or = 0.002. Ho: / = 72.1 Ha: H > 72.1 You believe the population is normally distributed, but you do not know the standard deviation. You obtain a sample of size n = 75 with a mean of M = 80.4 and a standard deviation of SD = 18.4. What is the critical value for this test? (Report answer accurate to three decimal places.) critical value = What is the test statistic for this sample? (Report answer accurate to three decimal places.) test statistic = The test statistic is... O in the critical region O not in the critical region This test statistic leads to a decision to... O reject the null O accept the null O fail to reject the null As such, the final conclusion is that... O There is sufficient evidence to warrant rejection of the claim that the population mean is greater than 72.1. O There is not sufficient evidence to warrant rejection of the daim that the population mean is greater than 72.1. O The sample data support the claim that the population mean is greater than 72.1. O There is not sufficient sample evidence to support the claim that the population mean is greater than 72.1