SOLUTION: The time to complete a constructions project is normally distributed with a mean of 60 weeks and a standard deviation of 4 weeks.
a. What is the probability the project will be
Algebra ->
Probability-and-statistics
-> SOLUTION: The time to complete a constructions project is normally distributed with a mean of 60 weeks and a standard deviation of 4 weeks.
a. What is the probability the project will be
Log On
Question 999504: The time to complete a constructions project is normally distributed with a mean of 60 weeks and a standard deviation of 4 weeks.
a. What is the probability the project will be finished in 58 weeks or less?
b. What is the probability the project will be finished in 66 weeks or less?
c. What is the probability the project will take longer than 65 weeks?
d. What is the probability the project will be finished between 57 and 63 weeks?
PLEASE HELP!! I tired to convert it into a normal distribution function. Answer by solver91311(24713) (Show Source):
Calculate your Z-scores and look 'em up in your Standard Normal Distribution Table. Just remember that the probability that you look up is the "less than" probability so you may have to subtract from 1 or subtract one Z-score from the other. Once you have some answers, send me a note and I'll check your work.
John
My calculator said it, I believe it, that settles it
