The table below was generated from a survey of college students. The random variable x represents the reported number of caffeinated drinks consumed per day during finals week. x 0 1 2 3 4+ P(x) 0.05 0.25 0.20 0.25 0.25 What is the mean (expected value) of this probability distribution? (Use x = 4 for the 4+ column.)

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The table below was generated from a survey of college students. The random variable x represents the reported number of caffeinated drinks consumed per day during finals week.
x 0 1 2 3 4+
P(x)
0.05 0.25 0.20 0.25 0.25


What is the mean (expected value) of this probability distribution? (Use x = 4 for the 4+ column.) 

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