Dep.= | Mileage | Indep.= | Cylinders | |||
SUMMARY OUTPUT | ||||||
Regression Statistics | ||||||
Multiple R | ||||||
R Square | ||||||
Adjusted R Square | ||||||
Standard Error | ||||||
Observations | 7.0000 | |||||
ANOVA | ||||||
Significance | ||||||
df | SS | MS | F | F | ||
Regression | 12.4926 | |||||
Residual | ||||||
Total | 169.4286 | |||||
Standard | ||||||
Coefficients | Error | t Stat | P-value | Lower 95% | Upper 95% | |
Intercept | 38.7857 | |||||
Cylinders | -2.7500 | |||||
SE | CI | CI | PI | PI | ||
Predicted | Predicted | Lower | Upper | Lower | Upper | |
x0 | Value | Value | 95% | 95% | 95% | 95% |
4.0000 | 1.9507 | |||||
6.0000 | 1.1763 |
Is there a relationship between a car's gas MILEAGE (in miles/gallon) and its number of CYLINDERS? Use the excel output above to answer the following question.
What is the 95% confidence interval for the mean gas mileage of 6 cylinder cars (without units)?
a. |
(19.4073, 25.1641) |
|
b. |
(20.5495, 24.0219) |
|
c. |
(19.9155, 24.6559) |
|
d. |
None of the answers is correct |
|
e. |
(19.2614, 25.3100) |
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