Question: Statistics 1. Given that u = 88 and o = 12 and x is normally distributed, find P(84 1 Given = 88 and o =

1 Given = 88 and o = 12 and x is normally

Statistics

1. Given that u = 88 and o = 12 and x is normally distributed, find P(84

1 Given = 88 and o = 12 and x is normally distributed, find P(84 < x < 95) 2 The math portion of the ACT has an average score of 18 with a standard deviation of 6. and is normally distributed. Find the probability of: a. Scoring less than 14. b. Scoring more than 30. c. Scoring befiveen 20 and 28. 3- In 9 years of teaching Geometry, Mr. Heston found that his ISt Semester Tests scores were normally distributed with a mean of 77.5 and a standard deviation of 7.1. What is the probability that a class of 20 students taking the test would average higher than 80? 4 IThe average wait for an airplane to take off at O'Hare Airport in Chicago is 14 minutes, with a standard deviation of 2.5 minutes. What is the probability that the average wait time for the next 15 airplanes is less than 13 minutes?

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