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 appropriate probability distribution for the random variable is
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discrete
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continuous
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either discrete or continuous depending on how the interval is defined
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None of these alternatives is correct.