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Probability and time required project

The time required to complete a project is known to be normally distributed with a mean of 44 weeks and a standard deviation of 8 weeks.

a) What is the probability that the project is finished in 40 weeks or fewer?
b) What is the probability that the project is finished in 52 weeks or fewer?
c) There is an 95 percent chance that the project will be finished in fewer than how many weeks?

I already have parts a and b done. just need help setting up the equation for part c. Does this require normal distrubition or binomial distribution.

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