. To test Hum = El] 1urersus Him a: Si], a random sample of size n = 25 is obtained from a population that is known to be normally distributed . a. If the sample mean is determined to he 1'53 and the sample standard deviation is 3.5; compute the test statistic. b. Suppose the researcher tests the hypothesis at the .l level of significance. 1I."'l.lill the researcher reject the null hypothesissupport your conclusion}