A Random Sample of N = 9 Scores Is Selected

question 27

Multiple Choice

A random sample of n = 9 scores is selected from a normal distribution with μ = 80 and σ = 12.What is the probability that the sample mean will be between 76 and 84?

• A)0.9974
• B)0.6826
• C)0.3830
• D)0.2586

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Definitions:

Carcinoma Lesion

A malignant lesion or tumor that arises from epithelial cells, often found in the skin or lining of internal organs.

Prostate-specific Antigen

A protein produced by the prostate gland, elevated levels of which can indicate prostate cancer or other prostate disorders.

Transrectal Ultrasound

An imaging test using sound waves to create pictures of the prostate gland and surrounding tissues, performed by inserting a probe into the rectum.

Prostate Biopsy

A procedure where small samples of the prostate gland are removed to be examined under a microscope for cancer or other conditions.