Question

A student believes that no more than 25% (i.e., ≤25%) of the students who finish a...

A student believes that no more than 25% (i.e., ≤25%) of the students who finish a statistics course get an A. A random sample of 81 students was taken. Twenty-four percent of the students in the sample received 'A's.

a. State the null and alternative hypotheses and using the critical value approach, test the hypotheses at the 1% level of significance.

b. Using the p-value approach, test the hypotheses at the 1% level of significance

Homework Answers

Answer #1

The estimated proportion is

a)We have to test

The test statistic is

The critical value is

Since , we fail to reject the null hypothesis.

b)The P-value of the test is

Since , we fail to reject the null hypothesis.

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