Mathematics, 12.12.2019 19:31 LuchaPug

Let x1, x2, and x3 represent the times necessary to perform three successive repair tasks at a certain service facility. suppose they are independent, normal rv's with expected values μ1, μ2, and μ3 and variances σ12, σ22, and σ32, respectively. if μ1=μ2 = μ3=70 and σ1^2=σ2^2=σ3^2=21, calculate p(to < 231) and p(168 < t< 231).

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Let x1, x2, and x3 represent the times necessary to perform three successive repair tasks at a certa...