The average time it takes a person to fall asleep 20.9 minutes. The standard deviation is 2.4 minutes.?

The average time it takes a person to fall asleep 20.9 minutes. The standard deviation is 2.4 minutes. Assume the time is normally distributed. The average time it takes a person to fall asleep 20.9 minutes. The standard deviation is 2.4 minutes. Assume the time is normally distributed. Find the... show more The average time it takes a person to fall asleep 20.9 minutes. The standard deviation is 2.4 minutes. Assume the time is normally distributed.


The average time it takes a person to fall asleep 20.9 minutes. The standard deviation is 2.4 minutes. Assume the time is normally distributed.

Find the probability that it will take a randomly selected person more than 18 minutes to fall asleep.

0.8659

0.1131

0.8869

0.9254

cAN SOMEONE PLEASE SHOW ME HOW TO SOLVE THIS THANK YOU SO MUCH.
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