A Student Believes That No More Than 20% (I

question 137

Essay

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

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Definitions:

Nail Groove

The depression or groove in the skin in which the sides of the nail are embedded, playing a critical role in nail growth and health.

Apocrine Sweat Glands

Apocrine sweat glands are a type of gland found in various parts of the body associated with hair follicles; they secrete a milky sweat that produces body odor when decomposed by bacteria on the skin.

Cerumen

A substance secreted in the ear canal, also known as earwax, that cleans and protects the ears.

Body Odor

A scent produced by the body, often arising from bacteria breaking down protein into acids in places like the armpits.