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Automobile manufacturers are interested in the difference in reaction times for drivers reacting to traditional incandescent lights and to LED lights. A sample of 17
Automobile manufacturers are interested in the difference in reaction times for drivers reacting to traditional incandescent lights and to LED lights. A sample of 17 drivers are told to press a button as soon as thev see a light flash in front of them and the reaction time was measured in milliseconds. Each driver was shown each tvpe of light. The average difference in reaction times l[traditional - LED] is 4.2 ms with a standard deviation of 5.43 ms. A 95% confidence interval for the average difference between the two reaction times was (1.41. 6.99]. Which of the following is the best interpretation? 0 1} The proportion of all drivers that had a difference in reaction times between the two lights is 95%. O 2} We are 95% confident that the average difference in reaction time between the two light types for all drivers is between 1.41 and 6.99. O 3} We are 95% confident that the average difference in the reaction times of the drivers sampled is between 1.41 and 6.99. O 4:, We are certain the average difference in reaction times between the two light types for all drivers is between 1.41 and 6.99. O 5} We are 95% confident that the difference between the average reaction time for LED lights and the average reaction time for traditional lights is between 1.41 and 6.99
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