Question

Construct a probability distribution for the following data set, which represents the number of hours of...

Construct a probability distribution for the following data set, which represents the number of hours of students in a college slept previous night. Let the random variable x represent the number of hours of sleep.

Hours 4 5 6 7 8 9 10
Students 1 6 11 18 9 3 2

b) Calculate the expected value (mean), variance, and standard deviation of the probability distribution.

Math   Statistics-And-Probability   
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