Mail-Order Catalogs Often Advertise a Device for Repelling Irritating Insects

question 13

Multiple Choice

Mail-order catalogs often advertise a device for repelling irritating insects.One device has a frequency range from 30,000 to 65,000 cycles per second (Hz) .Humans hear from roughly 50 to 15,000 cycles per second.In designing an experiment to determine if this device actually does repel a certain insect,what question(s) should you ask?

• A)Is the target insect able to perceive a sound between these frequencies?
• B)Does the insect approach this sound device at a rate higher than random chance?
• C)Does the insect move away from this sound device at a rate higher than random chance?
• D)Does the insect produce any sounds within this range that would lead to a biological function to perceiving such frequencies?
• E)All of the choices are correct.

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