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. The expected value of the random variable x is Select one: 2. b. 5.3. Oc. 10. O d. 2.30. Clear my choice A weighted average of the values of a random variable, where the probability function provides weights, is known as Select one: 6 M

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