A Major Cell Phone Service Provider Has Determined That the Number

question 87

Multiple Choice

A major cell phone service provider has determined that the number of minutes that its customers use their phone per month is normally distributed with a mean equal to 445.5 minutes with a standard deviation equal to 177.8 minutes. As a promotion, the company plans to hold a drawing to give away one free vacation to Hawaii for a customer who uses between 400 and 402 minutes during a particular month. Based on the information provided, what proportion of the company's customers would be eligible for the drawing?

• A) Approximately 0.1026
• B) About 0.004
• C) Approximately 0.2013
• D) About 0.02

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Definitions:

Garbage Disposal

A device installed under a kitchen sink that shreds food waste into small pieces to pass through plumbing.

Recycling

The process of converting waste materials into new products to prevent waste of potentially useful materials, reduce consumption of fresh raw materials, and lower energy usage and pollution.

Marginal Benefit

The additional satisfaction or utility that a person receives from consuming an additional unit of a good or service.

Marginal External Damages

Additional harm or cost imposed on society or a third party that is not accounted for by the producer or consumer of a good or service.