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# The accompanying normal probability plot was constructedfrom a sample of 30 readings on ISBN: 9781305251809 122

## Solution for problem 87 Chapter 4.6

Probability and Statistics for Engineering and the Sciences | 9th Edition

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Problem 87

The accompanying normal probability plot was constructedfrom a sample of 30 readings on tension formesh screens behind the surface of video display tubesused in computer monitors. Does it appear plausible thatthe tension distribution is normal?

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----- Lecture 10/23/17 ----- → Section 5.3 ← x ~ N( μ, ��) → Z using Z = (x - μ )/�)� (Z ~ N(0,1)), using this to find probability (area) using:  Z - table,  Symmetry  Complement rules,  etc., Example: Mean = 174 Standard Deviation = 20 X = 200 → P(x < 200) = x ~ N(174, 200) → P((x - μ)/(�) < (200 - 174)/(20)) → P(z < 1.3) = 0.9032 Ex. 2.1 Mean = 174, Standard Deviation...

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##### ISBN: 9781305251809

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