Tutors Answer Your Questions about Problems-with-consecutive-odd-even-integers (FREE)
Question 696798: The time taken by Arushi to cover 150 km was 2hrs and 30 min more than the time taken in return journey. If she returned at a speed of 10km/hr more than the speed of going,find her speed in each direction.
Click here to see answer by stanbon(75887) |
Question 696921: PLEASE i need your help
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?
can some one walk me through this PLEASE!!!
Click here to see answer by stanbon(75887) |
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
Click here to see answer by lynnlo(4176) |
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
Click here to see answer by MathTherapy(10551)  |
Question 697384: if the correlation coefficient is 0.65, what is the sign of the slope of the regression line?
- As the correlation coefficient decreases from -0.97 to -0.99, do the points of the scatter plot move toward the regression line, or away from it?
Click here to see answer by jim_thompson5910(35256) |
Question 697397: Two cards are selected, one at a time from a standard deck of 52 cards. Let x represent the number of fives drawn in a set of 2 cards.
(A) If this experiment is completed without replacement, explain why x is not a binomial random variable.
(B) If this experiment is completed with replacement, explain why x is a binomial random variable
Click here to see answer by Positive_EV(69)  |
Question 697531: Classify the following as discrete or continuous random variables.
(A) The number of business majors at South University
(B) The time it takes to complete this assignment
(C) The blood pressures of patients admitted to a hospital in one day
(D) The number of people who play the state lottery each day
Click here to see answer by Simnepi(216)  |
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