a scientist is considering a received assumption about the average for a specific population which leads to following set of hypotheses, use the following information to conduct this test. assume that the level of significance is 0.05. the sample mean is 148, the sample standard deviation is 15.6, and the sample size is 48. (a) the standard error is 2.3289 . (b) the test statistic is 3.4149 . (c) the p-value is 0.0009 . (d) the critical value is 1.96 . (e) the conclusion is to