Dep.= | Mileage | Indep.= | Length | |||
SUMMARY OUTPUT | ||||||
Regression Statistics | ||||||
Multiple R | ||||||
R Square | ||||||
Adjusted R Square | ||||||
Standard Error | ||||||
Observations | 7.0000 | |||||
ANOVA | ||||||
Significance | ||||||
df | SS | MS | F | F | ||
Regression | 6.1135 | |||||
Residual | ||||||
Total | 169.4286 | |||||
Standard | ||||||
Coefficients | Error | t Stat | P-value | Lower 95% | Upper 95% | |
Intercept | 80.0094 | |||||
Length | -0.3047 | |||||
SE | CI | CI | PI | PI | ||
Predicted | Predicted | Lower | Upper | Lower | Upper | |
x0 | Value | Value | 95% | 95% | 95% | 95% |
175.0000 | 2.3108 | |||||
210.0000 | 2.9335 |
Is there a relationship between a car's gas MILEAGE (in miles/gallon) and its LENGTH (in inches)? Use the excel output above to answer the following question.
What is the 90% confidence interval for the mean gas mileage of cars that are 210 inches in length (without units)?
a. |
(10.3226, 21.7222) |
|
b. |
None of the answers is correct |
|
c. |
(11.6926, 20.3522) |
|
d. |
(10.1114, 21.9334) |
|
e. |
(8.4804, 23.5644) |
There is No relationship between the cars milage in gallons OR in milea and it's length.because the mileage and the length are very different parameters to each other they are not related to the each other. Therefore there is No relationship between them.
The 90% confidence interval is : None of the Answer is correct .
Because in our output above the lower confidence interval and upper confidence interval is 95% so here we can not assume the 90% confidence interval.
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