A Student Believes That the Average Grade on the Statistics

question 79

Essay

A student believes that the average grade on the statistics final examination was 87.A sample of 36 past 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.

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Definitions:

Equal Division

The process of dividing something into parts or portions that are as nearly equal as possible.

LLP

Limited Liability Partnership, a partnership in which some or all partners have limited liabilities, protecting personal assets from debts and liabilities of the partnership.

Net Income

The total profit of a company after all expenses, including taxes and interest, have been deducted from total revenues.

Capital Account Balance

The net amount of funds invested in a business by its owners, plus retained earnings or minus accumulated losses.