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Unformatted text preview: Stat 479
Fall 2010
Quiz 7
October 25, 2009 1. An urn contains four balls. Each ball has a unique number on it. The numbers on
the balls are 2, 4, 6, and 8. Two balls are drawn from the um and the maximum number drawn is used to I
estimate the largest number on a ball in the urn. Calculate the Mean Square Error of this estimator. )jo SS ib ) Q E f @133 “Pro h K “1%:
a1, Ur ye L4“
L9
5
a
e
% 2. You are given the following sample of claims:
X28,10,l3,14,15,15,16,l8, 20, 25
The sum ofX is 154 and the sum osz is 2584.
. . l3;
H0 is that ux = 13 and H1 is that ux Calculate the 2 statistic, the critical value(s) assuming a signiﬁcance level of 10%,
and the p value. State your conclusion with regard to the Hypothesis Testing. ﬁr w {HQ V ,
W t" N 2“ “V 32;) Pg ﬁg
L9 ‘4  '3» ﬂ
6 ; f I .s (9
13k?
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 Spring '10
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