using excel, show how you did the work.

1)A statistical analysis of 1,000 long-distance telephone calls made from the headquarters of the Bricks & Clicks Computer Corporation indicates that the length of these calls is normally distributed with a mean of 240 seconds and standard deviation of 40 seconds.

a)What is the probability that a call lasted less than 180 seconds?

b)What is the probability that a call lasted between 180 & 300 seconds?

c)What is the probability that a call lasted between 110 & 180 seconds?

d)If you were collecting data on these calls, what would you consider as outliers?(300 seconds, 350 seconds, 400 seconds, etc...explain)