This is done on excel, show every step by step on how to use the excel to find this

-The number of miles travelled per week by a motorist is Normally distributed with a mean of 640

and a standard deviation of 50.

Calculate the probability that in a week, he will travel more than 600 miles.

Then Calculate the probability that in a week, he will travel between 600 and 700 miles.

Then Calculate the probability that the average number of miles travelled

per week over a complete year of 52 weeks will exceed 650.