Question: Consider the following sample data with mean and standard deviation of 20.5 and 5.4, respectively.
a. Using the goodness-of-fit test for normality, specify the competing hypotheses in order to determine whether or not the data are norm ally distributed.
b. Calculate the value of the test statistic.
c. At the 5% significance level, what is the critical value? What is the decision rule?
d. What is the conclusion?