a) Find the z in P(Z > z) = 0.8729. Plot the distribution, highlight the area of theprobability and the position of z. b) Find the z in P(0 ≤ Z≤ z) = 0.2764. Plot the distribution and highlight the area ofthe P(0 ≤ Z≤ z).as c) Find the z in P(Z ≤ z) = 0.9251. Additionally, plot the distribution and highlight thearea of P(-z ≤ Z ≤ z). Calculate the value of P(-z ≤ Z≤ z).