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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.) Vehicles Vehicle Type
Somerset
Oakland
Great lakes
Jamestown
Total
Car
44
49
36
64
193
Mini Van
21
15
18
13
67
Full Sized Van
2
3
10
Suv
19
27
26
12
84
Truck
14
6
17
9
46
Col Total
100
400
Create a hypothesis and perform a series of tests to determine if there is any fundamental difference in the findings.
Please use a combination of content and supportive examples.
Carry out a test of hypothesis on each of regression coefficients. Could you delete any of the variables?
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We want to know if his support has decreased. In computing a test of hypothesis with , what is the estimate of the overall proportion?
If you did not know anything about standard deviation of population from which sample was taken, find out the 95% confidence interval for mean test score.
Determine the probability that none of the calculators will be defective?
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Based on the scatter diagram, does there appear to be any relationship between the number of assemblers and production? Explain.
Explain why we need to use the t distribution. What assumption do you need to make?
Draw a normal probability plot for residuals using excel or Minitab. Do the residuals seem normally distributed? If yes, why?
4 7 7 5 2 9 7 6 8 5 8 4 1 5 2 8 7 6 6 9. (a) Determine three quartiles and (b) draw box-and-whisker plot of the data.
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