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. State the null and alternative hypotheses.
b. Using a critical value, test the hypothesis at the 1% level of significance.
c. Using a p-value, test the hypothesis at the 1% level of significance.
a. H0: p ? 0.2
Ha: p > 0.2
b. Do not reject H0, 1 < 2.33 . There is not sufficient evidence at ? = 1% to conclude that more than 20% of the students get an A.
c. Do not reject H0; .1587 > .01 (same conclusion as part b)
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