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

question 10

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 appropriate test to see if the purchasing agent is correct is the ________________________ .

• A)chi-square test of independence
• B)z-test for two proportions
• C)chi-square goodness-of-fit test
• D)chi-square test of homogeneity
• E)normality test

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Definitions:

Composition

In mathematics, the composition of functions refers to the application of one function to the results of another.

Function

A relation or correspondence between two sets in which each element of the first set is paired with exactly one element of the second set, typically described by f(x).

Function

A relation between a set of inputs and allowable outputs, where each input is related to exactly one output.

Compounded Interest

Interest calculated on the initial principal and also on the accumulated interest of previous periods of a deposit or loan.