Astudy is designed to test the hypotheses h0: m $ 26 versus ha: m , 26. a random sample of 50 units was selected from a specified population, and the measurements were summarized to y  25.9 and s  7.6. a. with a  .05, is there substantial evidence that the population mean is less than 26? b. calculate the probability of making a type ii error if the actual value of the population mean is at most 24. c. if the sample size is doubled to 100, what is the probability of making a type ii error if the actual value of the population mean is at most 24?