A Student Believes That the Average Grade on the Statistics

question 107

Essay

A student believes that the average grade on the statistics final examination 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.

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Definitions:

HIV

Human Immunodeficiency Virus, a retrovirus that attacks the immune system and can lead to acquired immunodeficiency syndrome (AIDS) if not treated.

Paraphilia

Unusual sexual interests, or the sexual attraction to objects, situations, or individuals that are not part of normative stimulation.

Sexual Arousal

The physiological and mental state of being prepared for sexual activity, involving increased blood flow, heart rate, and heightened sensory perception.

STIs

Infections transmitted sexually, conditions that are spread from person to person via sexual intercourse.