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QUESTION
1) If X is normally distributed with a mean of 30 and a standard deviation of 10, find P(30 X 47). a) 0.455 b) 0.855 c) 0.755 d) 0.655 e) 0.
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 above
2) 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
