Section: Mix Questions
Explanation:
Operations managers are stakeholders on many projects. They deal with producing and managing the products and services of the organization. On many projects, they are responsible after the project is complete and has been formally handed off to them for incorporating the project into normal operations and providing long-term support for the product.

(As the target date is 1 SD away, I will select 68%. Why 84%?) The probability of PERT estimates is 50% and it is the mean. 1 SD from the mean covers an additional population of 34.1%, 2 SD from the mean covers 47.7% and 3 SD covers 49.8%. Conversely, -1 SD from the mean covers a population of - 34.1% etc. 13 days means - 1 additional day from the mean (that is 1 SD too); so from the data above the cumulative probability to complete, comes from 50% + 34.1% = 84.1% (answer C)To better understand my affirmation, we should consider a PERT estimate as a mean of a normal distribution (although PERT is based on a beta distribution but we all know that all the distribution can be approximated by a normal distribution), thus the area under the Gaussian curve delimited by the mean is 50% of the entire area.