On Average,a Certain Kind of Kitchen Appliance Requires Repairs Once

question 74

Multiple Choice

On average,a certain kind of kitchen appliance requires repairs once every four years.Assume that the times between repairs are exponentially distributed.Which of the following Excel commands computes the probability that the appliance will work no more than three years without requiring repairs?

• A) 0.3254
• B) 0.6744
• C) 0.5276
• D) 0.4724

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Definitions:

Nuclear Power Plant

A facility that generates electricity by using nuclear reactions to produce heat, which then is used to power steam turbines.

Discrete Random Variables

Variables in statistical analysis that can take on a countable number of distinct values, often representing occurrences.

Continuous Random Variables

Variables that can take on an infinite number of values within a given range.

Probability Density

A function that describes the relative likelihood for a random variable to take on a given value.