Suppose a Random Sample of 1,220 U

question 31

Multiple Choice

Suppose a random sample of 1,220 U.S. adults were asked about their opinion regarding federal spending on public education. Respondents were asked whether federal spending on public education was (a) too low, (b) adequate, or (c) too high. Respondents were classified by income level. If we wanted to test whether there was an association between the response to the question and income level, would this be a test of homogeneity or of independence?

• A)Independence
• B)Homogeneity

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Definitions:

Circadian Rhythms

Natural, internal processes that regulate the sleep-wake cycle and repeat roughly every 24 hours.

Melatonin

A hormone produced by the pineal gland that regulates sleep-wake cycles.

Cortisol

A steroid hormone released by the adrenal glands in response to stress or low blood-glucose concentration; plays a significant role in the body's response to stress.

Erythropoietin

A hormone produced by the kidneys that stimulates the production of red blood cells in the bone marrow.