An experiment was conducted to test the effect of different
lighting systems and the presence or...
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Advance Math
An experiment was conducted to test the effect of differentlighting systems and the presence or absence of a watchman on theaverage number of car burglaries per month at a parking garage. Thedata are in the following table and also in the file GARAGE, wherethe variables are named BURGLAR, LIGHTING and WATCHMAN.
Lighting
Watchman
Mean Number of Burglaries
poor
no
2.80
good
no
1.00
poor
yes
2.40
good
yes
0.75
Using the Lenth procedure, find which effect(s) (if any) appearsignificant.
effects
Interpret all of these significant effects.
Permanently upgrading the lighting in the garage will cost $700per month. Hiring awatchman will cost $3000 per month. It isestimated that lawsuits and loss of business cost on average $2000per burglary. Is it worth it to hire a watchman, install lights orboth?
Answer & Explanation
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3.8 Ratings (518 Votes)
a The net mean burglaries of whole data is 2801002400754 17375 Since burglaries in scenario 1 and 3 are higher than the mean hence they are significant b If lighting is poor then the mean no
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