Question: 8. Z is a standard normal variable. Find the value of Z in the following (show your works) ( Total: 12 marks; 4 marks each

8. Z is a standard normal variable. Find the value of Z in the following (show your works)

(Total: 12 marks; 4 marks each)

a. The area to the left of Z is 0.95728.

b. The area to the right of -Z is 0.69847

c. The area between -Z and Z is 0.84.

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