Which of the Following Is True About Computer Scanner Check-Outs

question 9

Multiple Choice

Which of the following is true about computer scanner check-outs ? i) They record purchases by passing them over a laser scanner ii) One of their advantages to the researcher is the ability to look at data over short periods of time iii) Consumers' purchase data can be instantly accessed

• A) i
• B) ii
• C) iii
• D) ii and iii
• E) I, ii and iii

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Definitions:

Mean

The arithmetic average of a set of values, calculated as the total of all values divided by the number of values.

Standard Normal

A type of normal distribution with a mean of 0 and a standard deviation of 1.

Area

In mathematics, the extent of a two-dimensional surface within a boundary, measured in square units.

Probability Density

A function that describes the relative likelihood for a continuous random variable to occur at a specific point.