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Lecture 10

STAT 231 Lecture 10: q10.pdf

3 pages87 viewsFall 2013

Department
Statistics
Course Code
STAT231
Professor
Matthias Schonlau
Lecture
10

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q10
Question 10: Hypothesis test, Shadyside
Shadyside is one of the nicest neighborhoods in Pittsburgh, PA. Great shopping! Test an hypothesis
about the average house price: H0: mu=$200,000 vs H1:mu!=$200,000. Assume houses prices are
normally distributed. Use a significance level of alpha=10%.
Reject the null hypothesis (correct)
Accept the null hypothesis
Do not reject the null hypothesis
Do not accept the null hypothesis
Solution:
:=200,000 . :  200,000 at α = 0.1
  =
=41407.16 4
=165628.7
Then,
=
 
~  =
= 279075 200000
165628.7 4
= 1.9097
   =[||> ||]
= 0.0755 < 0.1
Therefore, we reject .
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