10.4.4-T Question Help A simple random sample of size n = 15 is drawn from a population that is normally distributed. The sample mean is found to be x = 23.7 and the sample standard deviation is found to be s = 6.3. Determine if the population mean is different from 26 at the a = 0.01 level of significance. Complete parts (a) through (d) below. (a) Determine the null and alternative hypotheses. Ho 26 26