Consider the Following Passage

question 7

Multiple Choice

Consider the following passage:
Julia sells exotic birds. She has placed four orders with wholesale bird supplier Papagayo Co., and all of them have been filled with healthy birds. Lately, however, some wholesale competitors have been trying to get her to order from them. But, when it's time to make the next order, she decides she's better off with Papagayo because she's pretty sure she'll get healthy birds. (Do not assume that you know anything about birds or the bird business.)
If all the preceding orders had been for parrots, then her argument would be stronger if the new order was for

• A)both parrots and macaws.
• B)just parrots.
• C)just macaws.

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Definitions:

Standard Deviation

A measure of the amount of variation or dispersion in a set of values.

Null Hypothesis

In testing, it is the presumption that no effect or no difference exists in the population, serving as the hypothesis that is formally tested.

P-value

A measure in statistical hypothesis testing that helps in determining the significance of results, indicating the probability of observing the data if the null hypothesis is true.

Simple Random Sample

A sample drawn in such a way that every member of the population has an equal chance of being selected.