sample mean is found to be x = 20.9 and the sample standard deviation is found to Determine if the population mean is different from 26 at the a=0.01 level of signific Complete parts (a) through (d) below. (a) Determine the null and alternative hypotheses. Ho H 26 26 P-value. (b) C P-va (Rou (c) S P O b ecimal places as needed.) lusion for the test. ect Ho because the P-value is greater than the a=0.01 level of sign