If the Underlying Populations Cannot Be Assumed to Be Normal

question 33

Multiple Choice

If the underlying populations cannot be assumed to be normal, then by the central limit theorem, the sampling distribution of ₁ - ₂ is approximately normal only if both sample sizes are sufficiently large-that is, when ________.

• A) n₁ + n₂ = 30
• B) n₁ + n₂ ≥ 30
• C) n₁ = 30 and n₂ = 30
• D) n₁ ≥ 30 and n₂ ≥ 30

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Definitions:

Blood Pressure

The force exerted by circulating blood on the walls of blood vessels, a crucial indicator of cardiovascular health.

Arteriosclerosis

The thickening, hardening, and loss of elasticity of artery walls, leading to restricted blood flow and increased risk of heart disease.

Ischemic Stroke

A type of stroke caused by a blockage in an artery that reduces or stops blood flow to a part of the brain, leading to tissue damage.

Blood Clot

A mass formed by the coagulation of blood, which can be beneficial in preventing blood loss from injuries but harmful if it blocks blood flow through veins or arteries.