A random sample of 36 measurements was selected from a population with unknown mean μ and known standard deviation σ = 18. The sample mean is x = 28. a. Find the margin of error of 99% confidence interval for u. b. Calculate a 98% confidence interval for u. c. Calculate a 90% confidence interval for u.
A random sample of 36 measurements was selected from a population with unknown mean μ and known standard deviation σ = 18. The sample mean is x = 28. a. Find the margin of error of 99% confidence interval for u. b. Calculate a 98% confidence interval for u. c. Calculate a 90% confidence interval for u.
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
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
Transcribed Image Text:A random sample of 36 measurements was selected from a population with unknown mean μ and
known standard deviation σ = 18. The sample mean is x = 28.
a.
Find the margin of error of 99% confidence interval for u.
b. Calculate a 98% confidence interval for u.
c. Calculate a 90% confidence interval for u.
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