Question is attached A random sample of size n = 25 from a normal distribution with mean u and variance 36 has sample meanX = 16.3.(a) Calculate confidence intervals for u at three levels of confidence: 80%, 90% and 99%. How to the widthsof the confidence intervals change?(b) How would the CI width change if n is increased to 100?

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Description: Question is attached A random sample of size n = 25 from a normal distribution with mean u and variance 36 has sample meanX = 16.3.(a) Calculate confidence intervals for u at three levels of confidence: 80%, 90% and 99%. How to the widthsof the confi

(a)Computation of 80% confidence interval is obtained below:It is assumed that the population is…

Answered: A random sample of size n = 25 from a…

A First Course in Probability (10th Edition)

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ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

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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 random sample of size n = 25 from a normal distribution with mean u and variance 36 has sample mean
X = 16.3.
(a) Calculate confidence intervals for u at three levels of confidence: 80%, 90% and 99%. How to the widths
of the confidence intervals change?
(b) How would the CI width change if n is increased to 100?

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