An Internet reaction time test asks subjects to click their mouse button as soon as a light flashes on the screen. The light is programmed to go on at a randomly selected time after the subject clicks “Start.” The density curve models the amount of time the subject has to wait for the light to flash.

a. What height must the density curve have? Justify your answer.

b. About what percent of the time will the light flash more than 3.75 seconds after the subject clicks “Start”?

c. Calculate and interpret the 38th percentile of this distribution.

Transcribed Image Text:

2 4 Time (sec) until the light flashes