A Sample of N = 9 Is Drawn at Random

question 15

Multiple Choice

A sample of n = 9 is drawn at random from a population with a μ = 32 and a σ = 9. The probability that the sample mean will be 34 or below is _________.

• A) .1429
• B) .5871
• C) .2514
• D) .7486

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Definitions:

Plasma Cells

A type of white blood cell that produces antibodies to fight off infections.

Apoptosis

A form of programmed cell death that occurs in multicellular organisms, characterized by a series of biochemical events leading to changes in cell structure and death.

Interleukins

A diverse group of cytokines produced mainly by macrophages and lymphocytes.

B Cells

A type of white blood cell that matures in the bone marrow and plays a vital role in producing antibodies for the immune response.