A Lab Orders 100 Rats a Week for Each of the 52

question 103

Multiple Choice

A lab orders 100 rats a week for each of the 52 weeks in the year for experiments that the lab conducts. Suppose the mean cost of rats used in lab experiments turned out to be $13.00 per week. Interpret this value.

• A) Most of the weeks resulted in rat costs of $13.00.
• B) The median cost for the distribution of rat costs is $13.00.
• C) The expected or average cost for all weekly rat purchases is $13.00.
• D) The rat cost that occurs more often than any other is $13.00.

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Definitions:

NPN-Type Transistor

A semiconductor device used to amplify or switch electronic signals, made from a layer of P-type material between two layers of N-type material.

DMM

Digital Multimeter, a test tool used to measure two or more electrical values—primarily voltage (volts), current (amps), and resistance (ohms).

Continuity

Used to describe the status of an electrical connection or circuit with little or no resistance to current flow. Checked by using an ohmmeter.