If Light Bulbs Have Lives That Are Normally Distributed with a Mean

question 25

Short Answer

If light bulbs have lives that are normally distributed with a mean of 2500 hours and a standard
deviation of 500 hours, what percent of the bulbs will not last as long as 2000 hours?
Apply the 68-95-99.7 rule to answer #4 and #5.

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Definitions:

Sales Promotion

A marketing strategy involving short-term incentives to encourage the purchase or sale of a product or service.

Quicker Purchases

The process or strategy designed to accelerate the buying process, often through technology or streamlined operations.

Goodwill

An intangible asset that arises when a company is acquired for more than its fair market value, reflecting the brand's reputation and customer relations.

Outdoor Advertising

A form of advertising that reaches consumers while they are outside their homes, such as billboards, transit posters, and digital signage.