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Statistics - Graded Homework 8 - Fall 2008 | ECO 105, Assignments of Statistics

Davidson CollegeStatistics

Material Type: Assignment; Class: Statistics; Subject: Economics; University: Davidson College; Term: Fall 2008;

Typology: Assignments

Pre 2010

Uploaded on 08/09/2009

koofers-user-94t
koofers-user-94t 🇺🇸

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Economics 105 Davidson College
Aug - Dec 2008 Mark C. Foley
Graded Homework #8
Let
)1,2(~ NW
and
)1,0(~ NZ
.
(a) Calculate the probability that W is greater than -1 and also the probability that Z is greater
than -1. Do two separate calculations.
(b) Using a properly-labeled diagram and the appropriate z-values, clearly explain why the
answer to part (a) is different for Z than for W.

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Economics 105 Davidson College

Aug - Dec 2008 Mark C. Foley

Graded Homework

Let W^ ~^ N (^2 ,^1 )and Z^ ~^ N (^0 ,^1 ). (a) Calculate the probability that W is greater than -1 and also the probability that Z is greater than -1. Do two separate calculations. (b) Using a properly-labeled diagram and the appropriate z-values, clearly explain why the answer to part (a) is different for Z than for W.