The minimum sample size neededto construct a 95% confidenceinterval for u, with error notexceeding 1.5 if the sample is to bedrawn from a normal populationwith variance 225 isa. 247O b. 384О с. 246O d. 27е. 385

GivenMargin of error(E)=1.5variance(σ2)=225standard deviation(σ)=225=15confidence level=95%

Answered: The minimum sample size needed to…

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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The minimum sample size needed to construct a 95% confidence interval for µ, with error not exceeding 1.5 if the sample is to be drawn from a normal population with variance 225 is O a. 247 оb. 384 O c. 246 O d. 27 О е. 385