Question 139140: A student team examined parked cars in four different suburban shopping malls. One hundred vehicles were examined in each location. Research question: At a=.05, does vehicle type vary by mall location?
Vehicle Type______Somerset____Oakland____Great Lakes______Jamestown______Total
Car________________44__________49__________36_____________64_________193
Minivan_____________21__________15__________18_____________13_________67
Full-sized Van________02__________03__________03_____________02_________10
SUV_______________19__________27__________26_____________12_________84
Truck______________14__________06__________17_____________09_________46
Col Total___________100_________100_________100____________100________400
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! This problem was previously answered:
It is 136384 and can be seen by going
to www.algebra.com and using the search
bar for that number.
Cheers,
Stan H
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A student team examined parked cars in four different suburban shopping malls. One hundred vehicles were examined in each location. At alph=.05, does vehicle type vary by mall location?
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State hypothesis
Ho: vehicle type and mall location are independent
Ha: they are dependent
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show degree of freedom
(5-1)(4-1) = 12
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find critical value of chisquare
critical value for two-tail Chi-Sq test with alpha = 5% and df=12
4.404 and 23.337
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and interpret p-value
p-value = 0.0172
Only 0.0172 of test results could give stronger support for rejecting Ho.
p-value is less that 5% so reject Ho
vehicle type and mall location are dependent.
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Cheers,
Stan H.
Vehicle type,Somerset,Oakland,Greatlakes,Jamestown,Row Total
Car,44,49,36,64,193
Minivan,21,15,18,13,67
Full-sizedVan,2,3,3,2,10
SUV,19,27,26,12,84
Truck,14,6,17,9,45
Col Total,100,100,100,100,400
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