Completion Time (From Start to Finish)of a Building Remodelling Project

Multiple Choice

Completion time (from start to finish) of a building remodelling project is normally distributed with a mean of 200 work-days and a standard deviation of 10 work-days.The probability that the project will be completed within 185 work-days is ___.

A) 0.0668
B) 0.4332
C) 0.5000
D) 0.9332
E) 0.9950