Exercise 2. Solve the following problems. 1. Let the random variable Y represents the number of bond paper per ream that are used for reproducing modules on any given workday. The probability distribution for Department A is 3. 4. PY) 0.3 0.5 0.1 0.05 0.05 and for Department B 4. PIY) 0.25 0.15 0.30 0 30 Compute for the mean and variance of the two departments. Compare their mean and show that the variance of the probability distribution for department B is greater than of Department A.

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