The prices of petrol, petrol used, and the distant travelled by a model of sedan car used by six owners are recorded as follows: Price per liter (RM) Petrol used (L) Distant travelled (Km) 2.10 100 1050 2.15 120 1220 2.20 110 1200 2.25 117 1210 2.30 120 1280 2.40 119 1280 a) Plot a scatter diagram to show the correlation between petrol used and distant travelled. (b) Express the relationship between petrol used and distant travelled using a linear model. What does the model suggest? c) Do a hypothesis test on the coefficient of independent variable using 95% confidence level. What do you conclude?
The prices of petrol, petrol used, and the distant travelled by a model of sedan car used by six owners are recorded as follows:
|
Price per liter (RM) |
Petrol used (L) |
Distant travelled (Km) |
|
2.10 |
100 |
1050 |
|
2.15 |
120 |
1220 |
|
2.20 |
110 |
1200 |
|
2.25 |
117 |
1210 |
|
2.30 |
120 |
1280 |
|
2.40 |
119 |
1280 |
a) Plot a
(b) Express the relationship between petrol used and distant travelled using a linear model. What does the model suggest?
c) Do a hypothesis test on the coefficient of independent variable using 95% confidence level. What do you conclude?
Step by step
Solved in 5 steps with 3 images
