Question
LetXibe the i th observation of variable X in a random sample of size n. Suppose E(X)= and V(X)=>0. LetX=1/n n i=1 Xi 1) Find
LetXibe the i th observation of variable X in a random sample of size n. Suppose E(X)= and V(X)=>0. LetX=1/n n i=1 Xi
1) Find the approximate distribution ofX-
2)Based on the result above, find a statistic to test the hypothesis that=
o.Choose a statistic that follows standard normal distribution under the hypothesis.
3)Suppose n=100,x=1200, and =2000.Test the hypothesis that =1000 at 5% significance level. Choose the one that best describes your result.
4)Find the 95% confidence interval for .
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Transportation A Global Supply Chain Perspective
Authors: John J. Coyle, Robert A. Novak, Brian Gibson, Edward J. Bard
8th edition
9781305445352, 1133592961, 130544535X, 978-1133592969
