What is the probability that it will get builtSolution62 or

What is the probability that it will get built?

62+ or - 5.50 N

Mean =62.and std dev = 5.50

P(X<60) = P(z<-0.363) = 0.5-.01406= 0.3594

30% of the time has z value as 0.38

x value lies between 62-0.38(5.50) , 62+3.85(5.50)

= Between 59.91 and 64.09

5 poposticks evenly distributed

But mean is not given.