a Find the expected value and variance for the number of com

a.) Find the expected value and variance for the number of complaints per day.

b.) Use Chebyshev\'s inequality to determine an interval which contains the number of complaints we will receive in a given day with 87.5% probability.

Solution

E(x) = 100

E(C) = E(X^2)-4E(X)+E(3)

= E(X^2)-400+3

As variance of x is not given we are unable to proceed