Question: 6.80 In a human factor experimental project, it has been determined that the reaction time of a pilot to a visual stimulus is normally distributed

6.80 In a human factor experimental project, it has been determined that the reaction time of a pilot to a visual stimulus is normally distributed with a mean of 1/2 second and standard deviation of 2/5 second.

(a) What is the probability that a reaction from the pilot takes more than 0.3 second?

(b) What reaction time is that which is exceeded 95%

of the time?

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