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In Problems 19-22, find the value of Za 20. 20.02 19. 20.01 22. 20.15 21. 20.025

In Problems 19-22, find the value of Za 20. 20.02 19. 20.01 22. 20.15 21. 20.025

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Problems 19-22
15. Find the z-score such that the area under the standard normal curve to its right is 0.25. 16. Find the z-score such that the area under the standard normal curve to its right is 0.35. 17. Find z-scores that separate the middle 99% of the distribution from the area in the tails of the standard normal distribution. 18. Find the z-scores that separate the middle 94% of the distribution from the area in the tails of the standard normal distribution. bal In Problems 19-22, find the value of Za 20. 20.02 NW 19. 20.01 22. 20.15 21. 20.025 In Problems 23-32, assume that the random variable X is normally distributed, with mean μ = 50 and standard deviation σ = 7. Compute the following probabilities. Be sure to draw a normal curve with the area corresponding to the probability shaded. 23. P(X> 35) 24. P(X>65) 25. P(X ≤ 45) 26. P(X ≤ 58) 27. P(40 < X < 65) 28. P(56 < X < 68) 29. P(55 ≤X ≤ 70) 30. P(40 ≤X ≤ 49) 31. P(38 < X ≤ 55) 12 P(56 ≤X < 66)
Transcribed Image Text:15. Find the z-score such that the area under the standard normal curve to its right is 0.25. 16. Find the z-score such that the area under the standard normal curve to its right is 0.35. 17. Find z-scores that separate the middle 99% of the distribution from the area in the tails of the standard normal distribution. 18. Find the z-scores that separate the middle 94% of the distribution from the area in the tails of the standard normal distribution. bal In Problems 19-22, find the value of Za 20. 20.02 NW 19. 20.01 22. 20.15 21. 20.025 In Problems 23-32, assume that the random variable X is normally distributed, with mean μ = 50 and standard deviation σ = 7. Compute the following probabilities. Be sure to draw a normal curve with the area corresponding to the probability shaded. 23. P(X> 35) 24. P(X>65) 25. P(X ≤ 45) 26. P(X ≤ 58) 27. P(40 < X < 65) 28. P(56 < X < 68) 29. P(55 ≤X ≤ 70) 30. P(40 ≤X ≤ 49) 31. P(38 < X ≤ 55) 12 P(56 ≤X < 66)
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