Hypothesis test for single proportion.
A student believes that no more than 20% (i.e., 20%) of the students who finish a statistics course get an A. A random sample of 100 students was taken. Twenty-four percent of the students in the sample received A's.
a. status the null and alternative hypotheses.
b. Using the critical value approach, test the hypotheses at the 1 percent level of significance.
c. Using the p-value approach, test the hypotheses at the 1 percent level of significance.