P-value approach to test the hypotheses

Reference no: EM1316355

A student believes that the average grade on the statistics final examinations was 87. A sample of 36 final examinations was taken. The average grade in the sample was 83.96 with a standard deviation of 12.

a) State the null and alternative hypotheses.

b) Using the critical value approach, test the hypotheses at the 5% level of significance.

c) Using the p-value approach, test the hypotheses at the 5% level of significance.

Reference no: EM1316355

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