# Probability of a randomly selected hour of calls

A car towing company averages 3 calls per hour. What is the probability that in a randomly selected hour the number of calls is 2?

The random variable X represents the annual salaries in dollars of a group of teachers. Find the expected value E(X).

X = {$30,000; $40,000; $50,000}.

P(30,000) = .5; P(40,000) = .3; P(50,000) = .2

https://brainmass.com/statistics/probability/probability-of-a-randomly-selected-hour-of-calls-134916

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A car towing company averages 3 calls per hour. What is the probability that in a randomly selected hour the number of calls is 2?

Solution. Let X be ...

#### Solution Summary

This solution finds a probability given an average per hour

$2.19