The average gain of 1225 transistors with component protectors was measured as 110. The standard deviation of the gain was also calculated as 7.50. Since he knows the gain value is in accordance with the Normal Distribution; The probabilities of "Pa: less than 135" and "Pb: 95 to 105" of birth will be examined. Accordingly, 

a.) Calculate the Pa and Pb probabilities and scan the expected regions by plotting the z-scatter plots 

b) Calculate the fulfillment of the transistors satisfying the "Pa AND Pb" probabilities 

c) Display the Pa, Pb and “Pa AND Pb” values on the histogram graph