To test Ho : o= 2.3 versus H, : 0> 2.3, a random sample of size n = 15 is obtained from a population that is known to be normally distributed. Complete p (a) If the sample standard deviation is determined to be s =2.1, compute the test statistic, X = 11.671 (Round to three decimal places as needed.) (b) If the researcher decides to test this hypothesis at the a = 0.05 level of significance, determine the critical value. X6.05 =(Round to three decimal places as needed.)