SITUATION 6. In the November 1990 issue of Chemical Engineering Progress, astudy discussed the percent purity of oxygen from a certain supplier. Assumethat the mean was 99.61 with a standard deviation of 0.08. Assume that thedistribution of percent purity was approximately normal.10. What percentage of the purity values would you expect to be between99.5 and 99.7?11. What purity value would you expect to exceed exactly 5% of thepopulation?

We want to find the probability and purity value

Answered: SITUATION 6. In the November 1990 issue…

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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A normally distributed data set has a mean of 100 and a standard deviation of 5. What percent of data values are bigger than 105 ? 16 % 95% 60 % 32 %
13 see picture
For a population with mean 90 and standard deviation 10 A. find the percentile rank for a score of 95 B. Find the cutoff score (for the population with mean 90, not the z score) for top 2% C. Find the cutoff score (for the population with mean 90, not the z score) for the lowest 20 %

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