SOLUTION: PLEASE i need your help ok im going to try to put it up that way again Consider the accompanying contingency table, which presents the results of an advertising survey about

Question 697006: PLEASE i need your help
ok im going to try to put it up that way again
Consider the accompanying contingency table, which presents the results of an advertising survey about the use of credit by Martan Oil Company customers.
Number of Purchases at Gasoline Station Last Year
Preferred Method of Payment 0-4 5-9 10-14 15-19 >20 sum
Cash 150 100 25 0 0 275
Oil-Company Card 50 35 115 80 70 350
National or Bank Credit Card 50 60 65 45 5 225
Sum 250 195 205 125 75 850
a. How many customers were surveyed?
b. Why are these bivariate data? What type of variable is each one?
c. How many customers preferred to use an oil-company credit card?
d. How many customers made 20 or more purchases last year?
i tried to put a cell in here and it wouldnt let me so this is the best i could do thanks
Found 2 solutions by lynnlo, MathTherapy:
Answer by lynnlo(4176) (Show Source): You can put this solution on YOUR website!
A=======3525
B======X AND Y
C=====1035
D=====2843
Answer by MathTherapy(10552) (Show Source): You can put this solution on YOUR website!

PLEASE i need your help
ok im going to try to put it up that way again
Consider the accompanying contingency table, which presents the results of an advertising survey about the use of credit by Martan Oil Company customers.
Number of Purchases at Gasoline Station Last Year
Preferred Method of Payment 0-4 5-9 10-14 15-19 >20 sum
Cash 150 100 25 0 0 275
Oil-Company Card 50 35 115 80 70 350
National or Bank Credit Card 50 60 65 45 5 225
Sum 250 195 205 125 75 850
a. How many customers were surveyed?
b. Why are these bivariate data? What type of variable is each one?
c. How many customers preferred to use an oil-company credit card?
d. How many customers made 20 or more purchases last year?
i tried to put a cell in here and it wouldnt let me so this is the best i could do thanks

a) 850
b) Because there are 850 customers (independent variable), and their individual method of payment (dependent variable).
c) 350
d) 75

RELATED QUESTIONS
Ok guys Im stuck again and need your help on this damn Cognitive Tudor program, the help... (answered by richwmiller,Alan3354)
OK my word problem is "Melissa is 24 years younger than Joyce. In 2 years, Joyce will be... (answered by ewatrrr,Alan3354)
PLEASE i need your help Consider the accompanying contingency table, which presents... (answered by stanbon)
Ok, with this particular question I did it again and again, but my answer just doesn't... (answered by stanbon,jim_thompson5910)
If you could please help me on the steps when using the quadratic equation? I can... (answered by Fombitz)
Ok thanks for the help now here is my question. 7^5/7^3 Now you may already know that (answered by solver91311)
Please help me! Ok, I don't know how to do this using mathematical notation, so I'm... (answered by josmiceli)
Well today I missed school but Im trying to do the homework. Weve done this in the past... (answered by Alan3354)
ok I know the answer to 5g-2h=3g+1 is is h+1/2 but anytime i try to write it using... (answered by josgarithmetic,josmiceli)