The Experiment Is Run Once for Each Combination of Brand

question 14

Multiple Choice

The experiment is run once for each combination of brand of AAA batteries and device (TV remote, hand-held game, flashlight and digital camera) .The twelve runs are ordered
Randomly.The time (in minutes) that each battery lasts under continuous usage is recorded.
Which of the following statements is true about this design?

• A)The devices serve as blocks to account for the variability between the lengths of time batteries last in different devices.
• B)This is a completely randomized design in one factor.
• C)The interaction effect between brand of battery and type of device is significant.
• D)This is an observational study.
• E)This is a retrospective study.

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Definitions:

Preferred Stock

A class of ownership in a corporation with a fixed dividend, receiving priority over common stock in dividend distribution and asset liquidation.

Preferred Stock

A class of stock that provides shareholders with a fixed dividend before any dividends are issued to common stockholders, often with no voting rights.

Common Stock

A type of equity ownership in a corporation, representing a claim on part of the company's profits and assets.

Dividends in Arrears

Outstanding dividend payments that have not been paid to preferred shareholders.