Based on data from 1996 through 2006 from the Western Regional Climate Center, the mean wind speed of winds in Honolulu, Hawaii is 10.6 miles per hour with a standard deviation of 3.5 mph. Assuming a normal distribution, what is the probability that the wind speed in Honolulu is less than 15 mph?
a) 0.8944
b) 0.9452
c) 0.9772
d) 0.9918