Use the Sign Test to Test the Indicated Claim

question 43

Multiple Choice

Use the sign test to test the indicated claim. A researcher wishes to test whether a particular diet has an effect on blood pressure. The blood pressure of 24 randomly selected adults is measured. After one month on the diet,
Each person's blood pressure is again measured. For 18 people, the second blood pressure reading was lower
Than the first, and for 6 people, the second blood pressure reading was higher than the first. At the 0.01
Significance level, test the claim that the diet has an effect on blood pressure. What would be the value of the test
Statistic, x?

• A) 19
• B) 5
• C) 13
• D) 6

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Definitions:

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A hormone, also known as ecdysone, that triggers the molting process in arthropods, leading to shedding of the exoskeleton and growth.

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Also known as adrenocorticotropic hormone (ACTH), it is a hormone produced by the anterior pituitary gland that stimulates the adrenal cortex.

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A condition where the body cannot respond properly to male sex hormones, leading to female physical traits despite having male genetic makeup.

Testosterone

Hormone secreted by testes; functions in sperm formation and development of male secondary sex characteristics.