A Researcher Hypothesizes That the Variation in the Amount of Money

question 31

Multiple Choice

A researcher hypothesizes that the variation in the amount of money spent on business dinners is greater than the amount spent on lunches. The variance of the cost of nine business dinners (in US$) was 6.12 and the variance on 12 lunches was 0.87. What test value should be used in an F test?

• A) 2.65
• B) 9.61
• C) 49.5
• D) 7.03

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Definitions:

Suprachiasmatic Nucleus

A region in the brain's hypothalamus responsible for controlling circadian rhythms, which are the body's internal biological clock.

Biological Clock

An internal mechanism that regulates bodily rhythms and cycles, such as the sleep-wake cycle, on a roughly 24-hour schedule.

Hypothalamus

A region of the brain that plays a crucial role in many essential functions, including hormone release, regulation of body temperature, and control of hunger and thirst.

Premenstrual Syndrome (PMS)

A condition that affects a woman's emotions, physical health, and behavior during certain days of the menstrual cycle, generally just before her menses.