I am confused on 10-11 how do I use that formula

Part 2: Building a Normal Distribution The formula to calculate the probability of an event using the standard normal distribution is as follows: _ 1% \"ux/E\" We took a sample of 100 people (n=100) and found an average age of 40 and a sample standard deviation of 5. 8. Using the online calculator at this link: hgps:ffwwxvmathportal.orgfcalculatorsfstatistics-calculatorfnormal-distribution- calculatorphp calculate the following probabilities: a. Find the probability that a person selected at random has an age below 40 years. The probability that a person selected at random has an age below 40 years is 0.5. b. Find the probability that a person selected at random has an age below 35 years. The probability that a person selected at random has an age below 35 years is 0.16. c. Find the probability that a person selected at random has an age below 45 years. The probability that a person selected at random has an age below 45 years is 0.84. 9. Take out your standard normal distribution template and ow chart. Put in the X values listed above and estimate the following probabilities: d. Find the probability that a person selected at random has an age below 40 years. The probability that a person selected at random has an age below 40 years is about 50. c. Find the probability that a person selected at random has an age below 35 years. The probability that a person selected at random has an age below 35 years is 16.16. f Find the probability that a person selected at random has an age below 45 years. The probability that a person selected at random has an age below 45 years is 84.1. 10. Finally, using the ztransformation equation (2 = Jt\") below and the ztable 'om the book (appendix, table 1, calculate the following probabilities: g. Find the probability that a person selected at random has an age below 40 years. The probability that a person selected at random has an age below 40 years is h. Find the probability that a person selected at random has an age below 35 years. The probability that a person selected at random has an age below 35 years is i. Find the probability that a person selected at random has an age below 45 years. The probability that a person selected at random has an age below 45 years is 11. Compare the values you got om questions 8, 9, and 10. How are the similar or different and why