Question: The random variable Y has the probability distribution given in the following table.
Given that , show that , and find the standard deviation of Y. Attempt: Need help continuing...
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2 equations in 2 unknowns...
Originally Posted by Peritus
2 equations in 2 unknowns... But in the textbook, the answer is
If you plug in a = 0.15 and b = 0.15 into both equations Peritus provided, don't they both work out? Hence a = b = 0.15 is the solution.
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