Data Summary
| Variable | Sample Size | Mean | Sample Std Dev |
|---|---|---|---|
| MPG (Import) | 47 | 34.2298 | 9.64369 |
| MPG (Domestic) | 35 | 33.18 | 10.5821 |
t-Based Confidence Interval
95% Confidence interval
Assumed unequal variances for variables
| Variable | Midpoint | Std Error | DF | Lower CL | Upper CL | Margin of Error |
|---|---|---|---|---|---|---|
| MPG (Import) - MPG (Domestic) | 1.04979 | 2.27556 | 69.4313 | -3.48932 | 5.5889 | 4.53911 |
Bootstrap-Based Confidence Interval
MPG (Import) - MPG (Domestic)
Confidence level = 95%
Difference of sample means = 1.049787
Bootstrap Std Error = 2.256204
Number of replications = 10000 ; Random generator seed = 100
| Variable | Method | Lower CL | Upper CL | Width |
|---|---|---|---|---|
| MPG (Import) - MPG (Domestic) | Percentile | -3.4847 | 5.37068 | 8.85538 |
Distribution of Bootstrap Replications of Difference of Sample Means
MPG (Import) - MPG (Domestic)
Number of replications = 10000, Random generator seed = 100
