Earth Sciences homework help. 1) If X is normally distributed with a mean of 30 and a standard deviation of 10, find P(30 ? X ? 47).a) 0.455b) 0.855c) 0.755d) 0.655e) 0.955f) None of the above2) Find a value of c so that P(Z ? c) = 0.62.a) 1.31b) 0.31c) 0.81d) -0.31e) 0.69f) None of the above
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