For numbers 2 to 4: Below is the probability distribution of the number of calls received by a switchboard operator within a one-hour interval, X. X = x 1 4 6. P[X = x] 0.13 0.27 0.27 0.18 0.04 0.02...

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Extracted text: For numbers 2 to 4: Below is the probability distribution of the number of calls received by a switchboard operator within a one-hour interval, X. X = x 1 4 6. P[X = x] 0.13 0.27 0.27 0.18 0.04 0.02 4. Suppose the variance of X is 2.0091. Which of the following is(are) TRUE? I. In the long run, the number of calls received by the switchboard operator within one hour interval deviates from the mean by 2.0091, on the average. II. In the long run, the number of calls received by the switchboard operator within one hour interval deviates from the mean by 1.4174, on the average. O A.I only O B. II only O C. Both I and II O D. Neither I nor II