Exhibit 5-8 the Random Variable X Is the Number of Occurrences of Occurrences

question 80

Multiple Choice

Exhibit 5-8
The random variable x is the number of occurrences of an event over an interval of ten minutes. It can be assumed that the probability of an occurrence is the same in any two-time periods of an equal length. It is known that the mean number of occurrences in ten minutes is 5.3.
-Refer to Exhibit 5-8. The expected value of the random variable x is

• A)2
• B)5.3
• C)10
• D)2.30

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