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a. Sketch or use technology to create the curve and label on the x-axis the position of the mean, the mean plus or minus one standard deviation, the mean plus or minus two standard deviations, and the mean plus or minus three standard deviations. b. Find the probability that a randomly selected score will be greater than 90. Shade the region under the Normal curve whose area corresponds to this probability.

a. Sketch or use technology to create the curve and label on the x-axis the position of the mean, the mean plus or minus one standard deviation, the mean plus or minus two standard deviations, and the mean plus or minus three standard deviations. b. Find the probability that a randomly selected score will be greater than 90. Shade the region under the Normal curve whose area corresponds to this probability.

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
Section: Chapter Questions
Problem 22SGR
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9.3
on 9.3 9.4 9: Inferring Population Means a. Are these numbers statistics or parameters? Explain. b. Label both numbers with their appropriate symbol (such as x, μ, s, or o). Exam Scores The distribution of the scores on a certain exam is N(80, 5) which means that the exam scores are Normally distributed with a mean of 80 and a standard deviation of 5. a. Sketch or use technology to create the curve and label on the x-axis the position of the mean, the mean plus or minus one standard deviation, the mean plus or minus two standard deviations, and the mean plus or minus three standard deviations. b. Find the probability that a randomly selected score will be greater than 90. Shade the region under the Normal curve whose area corresponds to this probability. Exam Scores The distribution of the scores on a certain exam is N(100, 10) which means ▸ that the exam scores are Normally distributed with a mean of 100 and a standard deviation of 10. a. Sketch or use technology to create the curve and label on the x-axis the position of the mean, the mean plus or minus one standard deviation, the mean plus or AP 488
Transcribed Image Text:on 9.3 9.4 9: Inferring Population Means a. Are these numbers statistics or parameters? Explain. b. Label both numbers with their appropriate symbol (such as x, μ, s, or o). Exam Scores The distribution of the scores on a certain exam is N(80, 5) which means that the exam scores are Normally distributed with a mean of 80 and a standard deviation of 5. a. Sketch or use technology to create the curve and label on the x-axis the position of the mean, the mean plus or minus one standard deviation, the mean plus or minus two standard deviations, and the mean plus or minus three standard deviations. b. Find the probability that a randomly selected score will be greater than 90. Shade the region under the Normal curve whose area corresponds to this probability. Exam Scores The distribution of the scores on a certain exam is N(100, 10) which means ▸ that the exam scores are Normally distributed with a mean of 100 and a standard deviation of 10. a. Sketch or use technology to create the curve and label on the x-axis the position of the mean, the mean plus or minus one standard deviation, the mean plus or AP 488
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