The Manager Wants to Know Whether the Variances of the Sales

question 59

Multiple Choice

The manager wants to know whether the variances of the sales at two pizza outlets are equal.A sample of 26 days of sales was taken from one outlet and had a sample standard deviation of 30.A sample of 16 days of sales from another had a sample standard deviation of 20.At the 0.05 level of significance,the conclusion is that

• A)the variances of the sales at two pizza outlets are equal.
• B)the variances of the sales at two pizza outlets are not equal.
• C)the variance of the sales at one outlet is greater than the one at the other.
• D)None of the above.

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Definitions:

Obedience Experiment

A study or research design aimed at understanding the extent to which individuals comply with orders or commands, especially from figures of authority.

Surprised Results

Findings in research or experiments that deviate significantly from what was originally hypothesized or expected.

Social Facilitation

The tendency for individuals to perform differently, usually better, when in the presence of others as opposed to when alone.

Well-Learned Tasks

Tasks or activities that have been practiced to the point of requiring little conscious thought, often executed automatically.