Question: The random variable x represents the number of phone calls the author receives in a day, and it has a Poisson distribution with a mean

The random variable x represents the number of phone calls the author receives in a day, and it has a Poisson distribution with a mean of 7.2 calls. What are the possible values of x? Is a value of x = 2.3 possible? Is x a discrete random variable or a continuous random variable?

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