In the dataset below1.15 0.33 0.40 0.33 1.35 0.38 0.25 0.40 0.35(a) Skewness in the stemplot of this data affects the appropriateness of procedures.using the t-distribution.Give two 95% confidence intervals, for the population mean, one with the outliersand one without, if any exist, using t-procedures.(b) How did the removal of outliers effect the confidence interval length, critical t-value and sample standard deviation?

Answered: Image /qna-images/answer/b7c64cf1-373e-46f0-bd93-2d6973fcd6fd.jpg

Answered: In the dataset below 1.15 0.33 0.40…

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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a simple random sample of 9 college freshmen were asked how many hour of sleep they typically got per night. The results were 8.5,6.5,8,9,6,7.5,24,8.5,9.5. Elminate the outlier, then consturct a 90% confidence interval for the mean amount of sleep from the remaining values.
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the variance in waiting times(in minutes) of 10 attendees at bethel woods, where attendees enter a single waiting line that feeds three checkpoint windows is 0.227 minutes. A 95% confidence interval for the population variance would be
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