Question 136384: A student team examined parked cars in four different suburban shopping malls. One hundred vehicles were examined in each location. Research question: At α = .05, does vehicle type vary by mall location? (Data are from a project by MBA students Steve Bennett, Alicia Morais, Steve Olson, and Greg Corda.)
Vehicle Type Somerset Oakland Great Lakes Jamestown Row Total
Car 44 49 36 64 193
Minivan 21 15 18 13 67
Full-sized Van 2 3 3 2 10
SUV 19 27 26 12 84
Truck 14 6 17 9 46
Col Total 100 100 100 100 400
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! 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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