The length of time for an individual to wait at a lunch counter is a random...

The length of time for an individual to wait at a lunch counter is a random variable whose density function is

f(x) = (1/4)e^(-x/4) for x > 0 and = 0 otherwise

a) Find the mean and the variance

b) Find the probability that the random variable is within three standard deviations of the mean and compare Chebyshev's Theorem.

Expert Solution

milcah answered 7 months ago

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