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4. The length of useful life of a fluorescent tube used inside the house is norm distributed. The useful life has a mean of 1600 hours and a standard deviat of 80 hours. Determine the probability that the tube chosen at random will between 1620 and 1700 hours. 5. Patrick is in the 90th percentile for his height. Common Grade 11 male stude have an average height of 66 inches with a standard deviation of 2 inches. H tall is he?

4. The length of useful life of a fluorescent tube used inside the house is norm distributed. The useful life has a mean of 1600 hours and a standard deviat of 80 hours. Determine the probability that the tube chosen at random will between 1620 and 1700 hours. 5. Patrick is in the 90th percentile for his height. Common Grade 11 male stude have an average height of 66 inches with a standard deviation of 2 inches. H tall is he?

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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Answer number 4 and 5 only pls. 

3. The average number of calories in a bar is 250 and has a standard deviation of 15. The number of calories per bar is approximately normally distributed. What percent of candy bars contain between 220 and 260 calories? 4. The length of useful life of a fluorescent tube used inside the house is normally distributed. The useful life has a mean of 1600 hours and a standard deviation of 80 hours. Determine the probability that the tube chosen at random will last between 1620 and 1700 hours. 5. Patrick is in the 90th percentile for his height. Common Grade 11 male students have an average height of 66 inches with a standard deviation of 2 inches. How tall is he?
Transcribed Image Text:3. The average number of calories in a bar is 250 and has a standard deviation of 15. The number of calories per bar is approximately normally distributed. What percent of candy bars contain between 220 and 260 calories? 4. The length of useful life of a fluorescent tube used inside the house is normally distributed. The useful life has a mean of 1600 hours and a standard deviation of 80 hours. Determine the probability that the tube chosen at random will last between 1620 and 1700 hours. 5. Patrick is in the 90th percentile for his height. Common Grade 11 male students have an average height of 66 inches with a standard deviation of 2 inches. How tall is he?
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