Suppose that during the ith day of December, the energy Xi
Chapter 9, Problem 9.22(choose chapter or problem)
Suppose that during the ith day of December, the energy Xi stored by a solar collector is a Gaussian random variable with expected value 32 - i/4 kW-hr and standard deviation of 10 kW-hr. Assuming the energy stored each day is independent of any other day, 'vhat is the PDF of Y, the total energy stored in the 31 days of December?
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