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A simple random sample of size n is drawn from a population that is normally distributed....

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Statistics

A simple random sample of size n is drawn from a population thatis normally distributed. The sample​ mean, x over bar​, is found tobe 106​, and the sample standard​ deviation, s, is found to be 10.​(a) Construct a 96​% confidence interval about mu if the sample​size, n, is 24. ​(b) Construct a 96​% confidence interval about muif the sample​ size, n, is 19. ​(c) Construct an 80​% confidenceinterval about mu if the sample​ size, n, is 24. ​(d) Could we havecomputed the confidence intervals in parts​ (a)-(c) if thepopulation had not been normally​ distributed?

Answer & Explanation Solved by verified expert
3.7 Ratings (609 Votes)
Here sample mean sample standard deviation s10Since here we dont have population standard deviation we useStudentss t    See Answer
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