Which of the Following Would Best Test the Hypothesis That

question 4

Multiple Choice

Which of the following would best test the hypothesis that moths stop flying in response to high-intensity bat sounds?

• A) Isolate and characterize the neurons that control moth flight muscles.
• B) Play recorded high-intensity bat sounds to wild flying moths and record what happens.
• C) Observe responses of bats to moths in natural settings.
• D) In an enclosure, compare the responses of moths to different models shaped like bats.

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Definitions:

Chi-squared Test

A statistical test used to determine if there is a significant difference between observed frequencies and expected frequencies in categorical datasets.

Chi-squared Distribution

A statistical distribution that is used primarily in hypothesis testing and is derived from the sum of squared standard normal deviates.

Proportion

A statistical measure that indicates the fraction of the total number of items in a certain category or characteristic.

Two-tail Test

A statistical test that is used to determine if there is a significant difference between a sample and a particular population mean, where the critical region is split between both tails of the distribution.