If we know that the length of time is takes a college student to find a parking spot in the library parking lot follows a normal distribution with a mean of 3.5 minutes and a standard deviation of 1 minute, find the probability that a randomly selected college student will find a parking spot in the library parking lot in less than 3 minutes.
a) 0.3551
b) 0.3085
c) 0.2674
d) 0.1915
THANK YOU.. I will appreciate and give 10 points...
Math problem.. pLEASE hELP???
X~N(3.5,1)
P(X%26lt;3)=P(Z%26lt;3-3.5/1)
=P(Z%26lt;-0.5)
SINCE IS -VE =1-ф(0.5)
from the table =1-0.6915
=0.3085
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