9. At a walk-in clinic, 60 patients arrive per hour on average. What is the probability...

9. At a walk-in clinic, 60 patients arrive per hour on average. What is the probability that the receptionist needs to wait at least 2 minutes for the next patient to walk in? Round your answer to 4 decimal places.

10.Which of the following statements about discrete random variables and discrete probability distributions is/are TRUE?

I. If X is a Binomial random variable, then X could take the value 1

II. The Poisson distribution is right skewed.

III. The mean and the standard deviation of a Poisson random variable are equal.

IV. The probability that a discrete random variable X takes the value 8.4 may not be 0.

11.Suppose people arrive at a hospital’s emergency department at a rate of 1 every 9.5 minutes. What is the probability that a person arrives within the next 3.5 minutes? Round your answer to 4 decimal places.

Expert Solution

orchestra answered 1 year ago

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