When drilling for raw materials of copper and nickel, the amount of copper obtained per cubic metre is typically C=460±140 kg (mean ± standard deviation) and the amount of nickel obtained per cubic metre is typically N=180±30 kg (mean ± standard deviation). If the amounts of copper and nickel obtained per cubic metre are positively correlated, with a correlation of Corr(C, N)=0.4, calculate the mean and standard deviation of the total amount of raw materials obtained per cubic metre (i.e. mean and standard deviation of C + N).
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When drilling for raw materials of copper and nickel, the amount of copper obtained
per cubic metre is typically C=460±140 kg (mean ± standard deviation) and the amount of
nickel obtained per cubic metre is typically N=180±30 kg (mean ± standard deviation). If the
amounts of copper and nickel obtained per cubic metre are
of Corr(C, N)=0.4, calculate the mean and standard deviation of the total amount of raw materials
obtained per cubic metre (i.e. mean and standard deviation of C + N).
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