Interpret the 95% confidence interval for "mileage (miles per gallon)." (15%)
Descriptives Std. Statistic Error
mileage Mean 21.9727 151114
95% Confidence Interval for Mean Lower Bound 20.9653
Upper Bound 22.9801
5% Trimmed Mean 21.4192
Median 20.0000
Variance 57.479
Std. Deviation 7.58147
Minimum 8.00
Maximum 80.00
Range 72.00
Interquartile Range 8.00
Skewness 2.705 164
Kurtosis 16.124 . . 327
To satisfy the Central Limit Theorem, we need sample sizes of at least ____(5%)
