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Normal Distribution Problems on Earnings of Spouses

5. If spouses yearly earnings are varying Normally with
X m ~ N (50, 9)
X f ~ N ( 60, 15)
What is their family total earning per year. What is the distribution and mean and std. deviation.

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Note: To indicate that a real-valued random variable X is normally distributed with mean μ and variance σ² ≥ 0, we write
X~N(μ, ...

Solution Summary

What is their family total earning per year. What is the distribution and mean and std. deviation.

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