15 and 16 please

Question 15 0/1 pt 9 10 99 0 Details You wish to test the following claim (H1 ) at a significance level of a = 0.005. Ho: M = 61.2 H1: M 89.8 You believe the population is normally distributed, but you do not know the standard deviation. You obtain a sample of size n = 30 with a mean of a = 93.1 and a standard deviation of s = 6.5. What is the critical value for this test? (Report answer accurate to three decimal places. ) critical value = Submit