Question: I Did not solve correctly. Need help Math Exercise 3. Let L and M be two independent normal random variables. Assume L has mean 78

I Did not solve correctly. Need help

Math Exercise 3. Let L and M be two independent normal random variables. Assume L has mean 78 and standard deviation 1.5, and M has mean 42 and standard deviation 2. (A) Find the mean and standard deviation for L + M. (Hint: This is rational!) B) Find the mean and standard deviation for L - M. (Hint: This is rational!) (C) Find P((L + M)

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