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a.n=50, x= 21 b.n= 150, x 112 C.n=90, x= 15 d. n=90, x=5.17

a.n=50, x= 21 b.n= 150, x 112 C.n=90, x= 15 d. n=90, x=5.17

MATLAB: An Introduction with Applications
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 random sample of n measurements was selected from a population with unknown mean u and standard deviation o= 30 for each of the situations in parts a through d. Calculate a 99% confidence interval for u for each of these situations. a.n= 50, x= 21 b. n= 150, x 112 C.n= 90, x= 15 d. n= 90, x= 5.17 e. Is the assumption that the underlying population of measurements is normally distributed necessary to ensure the validity of the confidence intervals in parts a through d? Explain. a. (Round to two decimal places as needed.)
Transcribed Image Text:A random sample of n measurements was selected from a population with unknown mean u and standard deviation o= 30 for each of the situations in parts a through d. Calculate a 99% confidence interval for u for each of these situations. a.n= 50, x= 21 b. n= 150, x 112 C.n= 90, x= 15 d. n= 90, x= 5.17 e. Is the assumption that the underlying population of measurements is normally distributed necessary to ensure the validity of the confidence intervals in parts a through d? Explain. a. (Round to two decimal places as needed.)
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