First problem: Given normal-scoreSecond problem: Given percentileSubject: MAT 112: Statistics andProbability Topic: Normal Distribution, Areas under the normal curve, determining probabilities using areas under normal curve, computing or locating percentile, finding the area of the normal distribution

V. EVALUATION the spa The long-distance calls made by the employees of a company is normally distributed with a ean of 6.3 minutes and a standard deviation of 2.2 minutes. Find the probability that a call 58 lasts between 5 and 10 minutes last less than 4 minutes C. Given percentile. (24 points) Scoring: (i) Graph- 1pt, (ii) Case# - 1pt, (iii) Find area - 2pts. (iv) Solving - 2 pts 1. A large group of students took a test in Physics and the final grades have a mean of 70 and a standard deviation of 10. If we can approximate the distribution of these grades by a normal distribution. Find the range of grades that corresponds to the: 20 Top 20% of the population Lower 75% of the population MAT 112 | 53