You wish to test the following claim (Ha) at a significance level of a = 0.05. How =,79.1 ' Ha: a > 7921 You believe the population is normally distributed, but you do not know the standard deviation. You obtain a sample of size n = 18 with mean M = 80.9 and a standard deviation of SD = 12.7. What 151the test statistic for this sample? (Report answer accurate to three decimal places.) test statistic = D What is the p-Value for this sample? (Report answer accurate to four decimal places.) p-value = [:]