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DIRECTIONS: Read each problem carefully. Show your complete solution and present an illustration for each problem. 1. A group of 500 volunteers recorded an average age of 21.5 years and standard deviation of FLE- years. Assumed the distribution is normally distributed. I. Find the number of volunteers with ages less than 2i] years. 1:. Find the number of volunteers with ages greater than 22 years. c. Find the actual age of Roland H 35.3 1 iii. of the volunteers are younger than him. 11. If 2.5% of the volunteers are older than Shirley how old is she? a. Between what ages is the middle 40% of the volunteers? ii. The mean weight of limit students at a certain high school is 140 pounds and the variance is 10!] pounds. Assuming that the weights are normally distributed. how many students weigh: a. Between 120 and 145 pounds? 1:. More than lfiilI pounds