Question 4 Let X be a normal random variable with a mean of 15 and a standard deviation of 3.Calculate the following values manually.Show all steps in your answers.(a) P(X >= 12) (b) P(X = 18) (d) P(5 < X Probability Distributions>Normal command.Cros
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![Question 4 Let X be a normal random variable with a mean of 15 and a standard deviation of 3.Calculate the following values manually.Show all steps in your answers.(a) P(X >= 12) (b) P(X = 18) (d) P(5 < X Probability Distributions>Normal command.Cros](/uploads/image/z/11667975-15-5.jpg?t=Question+4+Let+X+be+a+normal+random+variable+with+a+mean+of+15+and+a+standard+deviation+of+3.Calculate+the+following+values+manually.Show+all+steps+in+your+answers.%28a%29+P%28X+%3E%3D+12%29+%28b%29+P%28X+%3D+18%29+%28d%29+P%285+%3C+X+Probability+Distributions%3ENormal+command.Cros)
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