Exhibit 12-2 Last School Year, the Student Body of a Local University

question 10

Multiple Choice

Exhibit 12-2
Last school year, the student body of a local university consisted of 30% freshmen, 24% sophomores, 26% juniors, and 20% seniors. A sample of 300 students taken from this year's student body showed the following number of students in each classification. We are interested in determining whether or not there has been a significant change in the classifications between the last school year and this school year.
-Refer to Exhibit 12-2. At 95% confidence, the null hypothesis

• A)should not be rejected
• B)should be rejected
• C)was designed wrong
• D)None of these alternatives is correct.

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Definitions:

Hyperthyroidism

A condition where the thyroid gland produces too much of the hormone thyroxine, leading to accelerated body metabolism.

Thyroid Replacement Therapy

A treatment for hypothyroidism involving the administration of synthetic thyroid hormones to maintain normal hormonal levels.

Parathyroidectomy

A surgical procedure to remove one or more of the parathyroid glands, often to treat hyperparathyroidism.

Electrolyte

Electrolytes are minerals found in bodily fluids that are essential for various physiological functions, including nerve transmission and muscle contractions.