To illustrate the effects of driving under the influence(DUI) ofalcohol, a police officer brought a DUI simulator to a local high school. Student reaction time in an emergency was measured with unimpaired vision and also while wearing a pair of special goggles to simulate the effects of alcohol on vision. For a random sample of nineteenagers, the time(in seconds) required to bring the vehicle to a stop from a speed of 60 miles per hour was recorded. How would I use a95% confidence interval to test if there is a difference in

braking time with impaired vision and normal vision where the differences are computed as"impaired minusnormal."?

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Normal, Xi4.494.344.58 4.654.314.804.595.004.79

Impaired, Yi5.865.855.515.295.905.495.23 5.615.63