In January 2011, the United States Saw an Increase in Gas

question 40

Multiple Choice

In January 2011, the United States saw an increase in gas prices.Imagine the average price per gallon was $3.12 with a standard deviation of $0.27, according to a source such as AAA (Automobile Association of America) that tracks gas prices.Adam is on his long mid-semester break, so he and some of his friends decide to go on a 3000-mile road trip.He records the price of gas each of the 10 times they fill up the tank, and he computes an average price per gallon of $3.16.What percent of other sample means, based on 10 gas stations, would be greater than the one Adam observed? (Round z score to two decimal places.)

• A) 19.85
• B) 31.92
• C) 69.85
• D) 80.15

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Definitions:

Exhilaration

Exhilaration is a feeling of excitement, happiness, or elation, often resulting from an engaging or stimulating experience.

Endorphins

Natural pain-relieving chemicals produced by the brain that also promote feelings of pleasure and well-being.

Physically Exhausting

Refers to the state of extreme physical fatigue often resulting from demanding activity or exertion.

Acetylcholine

A neurotransmitter in the central and peripheral nervous system, involved in muscle activation, memory formation, and learning.