A Statistics Professor Receives an Average of Five E-Mail Messages

question 52

Multiple Choice

A statistics professor receives an average of five e-mail messages per day from students. Assume the number of messages approximates a Poisson distribution. What is the probability that on a randomly selected day she will have five messages?

• A)0.0067
• B)0.8750
• C)0.1755
• D)1.0000

Construct and interpret bar graphs.

Identify measures of central tendency and measures of variation.

Assess statistical significance of sample differences.

Explain the regression toward the mean.

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Definitions:

Flat Fee

A charged price for a service that does not vary with usage or time.

Overhead

All manufacturing costs that cannot be directly traced to a product. Overhead includes indirect labor and materials, plant depreciation, insurance and property taxes, plant management salaries, and so forth. See Indirect Cost Pool.

Direct Labor

The workforce involved in the hands-on manufacturing of goods or provision of services.

Variable Factory Overhead

Expenses that fluctuate with the level of production output, such as utilities or materials used in the manufacturing process.