SOLUTION: I am very lost I do not understand the language my teacher uses, please help.Thank You. Four students divided the task of surveying the types of vehicles in parking lots of four

Question 251128: I am very lost I do not understand the language my teacher uses, please help.Thank You.
Four students divided the task of surveying the types of vehicles in parking lots of four different
shopping malls. Each student examined 100 cars in each of three large suburban Detroit malls and one suburban Jamestown, New York, mall, resulting in the 5�4 contingency table shown below.
(a) Calculate each probability (i�ix) and explain in words what it means. (b) Do you see evidence
that vehicle type is not independent of mall location? Explain. (c) Do the row-total vehicle
percentages correspond roughly to your experience in your own city and state? If not, discuss possible
reasons for the difference. (Data are from an independent project by MBA students Steve
Bennett, Alicia Morais, Steve Olson, and Greg Corda.) Malls
i. P(C) ii. P(G) iii. P(T )
iv. P(V | S) v. P(C | J ) vi. P(J | C)
vii. P(C and G) viii. P(T and O) ix.P(M and J)
Smoking by Race for Males Aged 18�24
Interest Rate Forecast Accuracy
Somerset Oakland Great Lakes Jamestown, NY
Vehicle Type (S) (O) (G) (J ) Row Total
Car (C) 44 49 36 64 193
Minivan (M) 21 15 18 13 67
Full-size van (F) 2 3 3 2 10
SUV (V) 19 27 26 12 84
Truck (T) 14 6 17 9 46
Column Total 100 100 100 100 400
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Four students divided the task of surveying the types of vehicles in parking lots of four different shopping malls. Each student examined 100 cars in each of three large suburban Detroit malls and one suburban Jamestown, New York, mall, resulting in the 5�4 contingency table shown below.
(a) Calculate each probability (i�ix) and explain in words what it means.
Done( see below )
----------------------------
(b) Do you see evidence that vehicle type is not independent of mall location? Explain.
Check to see if the probabilities in some column see higher than those
in another column; do the same for lower than normal.
-----------------------------
(c) Do the row-total vehicle percentages correspond roughly to your experience in your own city and state? If not, discuss possible reasons for the difference.
Rural areas tend to have more trucks. Residential areas tend to have
more SUVs, etc.

(Data are from an independent project by MBA students Steve
Bennett, Alicia Morais, Steve Olson, and Greg Corda.) Malls
i. P(C)= 193/400 ii. P(G)=100/400 iii. P(T)=46/400
iv. P(V|S)= 19/100 v. P(C|J)=64/100 vi. P(J|C)=64/193
vii. P(C and G)= 36/400 viii. P(T and O)=6/400 ix.P(M and J)=13/400
Smoking by Race for Males Aged 18�24
Interest Rate Forecast Accuracy
Somerset Oakland Great Lakes Jamestown, NY
Vehicle Type (S) (O) (G) (J ) Row Total
Car (C)..... 44. 49. 36.. 64... 193
Minivan (M). 21. 15. 18.. 13.... 67
Fulze van(F). 2.. 3.. 3... 2.... 10
SUV (V)..... 19. 27. 26.. 12.... 84
Truck (T)... 14.. 6. 17... 9.... 46
Column Total 100 100 100. 100.. 400
============================================
Cheers,
Stan H.
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