Vending Machines on a College Campus Offer a Variety of Snacks.The

question 13

Multiple Choice

Vending machines on a college campus offer a variety of snacks.The purchasing agent believes that each type of snack is equally preferred by students and consequently orders equal quantities.The number of snacks sold from vending machines on this campus for the last six months is shown in the following table.The correct value of the test statistic for determining if the purchasing agent's belief if supported is ________________________ .

• A)χ ² = 8.012
• B)χ ² = 12.019
• C)χ ² = 0.984
• D)χ ² = 45.014
• E)None of the above.

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Definitions:

Standard Normal Curve

A type of normal distribution that has a mean of 0 and a standard deviation of 1, represented graphically as a bell-shaped curve.

Area

A measure of the extent of a surface or shape, expressed in square units.

Z-score

An indicator that shows the number of standard deviations a particular value is away from the average.

Standard Normal Curve

A symmetric bell-shaped curve that represents the distribution of a standardized variable, with a mean of 0 and a standard deviation of 1.