Question

The table provides summary statistics on highway fuel economy of cars manufactured in a certain year....

The table provides summary statistics on highway fuel economy of cars manufactured in a certain year.

Hwy MPG
Automatic Manual
Mean 22.92 28.87
SD 5.28 5.02
n 26 26

Use these statistics to calculate a 98% confidence interval for the difference between average highway mileage of manual and automatic cars, and interpret this interval in the context of the data. (Round your answers to two decimal places.)

We are 98% confident that on the highway cars with manual transmissions get on average (?) to (?) MPG more than cars with automatic transmissions.

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