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Construct a probability graph

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Reference no: EM132848029

The table shows the ages of students in a freshman orientation course,

Age - 17 18 19 20 21 22

Students - 2 13 4 3 2 1

a) construct a probability graph

b) graph the probability distribution using a histogram and describe its shape

c) Find the mean, variance, and standard deviation of the probability distribution and interpret the results.

d) Find the probability that a randomly selected student is less than 20 years old.

I think that I could probably find the mean, variance, and standard deviation of a probability distribution but I don't know how to get to that point. Could I get help breaking down this problem so I can solve it and understand?

Reference no: EM132848029

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