You wish to test the following claim (Ha) at a significance level of a = 0.02. Ho : u = 83.8 Ha: M > 83.8 You believe the population is normally distributed and you know the standard deviation is 8.4. You obtain a sample mean of 85.7 for a sample of size 63. a) What is the test statistic for this sample? (Report answer accurate to three decimal places.) test statistic = |1.7953 b) What is the p-value for this sample? (Report answer accurate to four decimal places.) p-value = | I c) The p-value is... O less than (or equal to) a greater than a d) This test statistic leads to a decision to... reject the null accept the null fail to reject the null