# Question

On hot, sunny, summer days, Jane rents inner tubes by the river that runs through her town. Based on her past experience, she has assigned the following probability distribution to the number of tubes she will rent on a randomly selected day.

(a) Calculate the expected value and standard deviation of this random variable X by using the PDF shown.

(b) Describe the shape of this distribution.

(a) Calculate the expected value and standard deviation of this random variable X by using the PDF shown.

(b) Describe the shape of this distribution.

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