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You know that P(X>4) = 84.13% and that P(X>7) = 30.85% Also X~N. Find and 2 ! (Harder - write out what you have in

  1. You know that P(X>4) = 84.13% and that P(X>7) = 30.85% Also X~N. Find and 2! (Harder - write out what you have in the appropriate equations and see what is missing - if you do it right you will have two equations and two unknowns which you can solve.)

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