Which of the following statements is true with regard to the distribution of time for the duration of an activity?
a. The optimistic time estimate is 3 times shorter than the pessimistic time estimate.
b. The most likely time estimate is located at an equidistant interval between the optimistic and pessimistic estimates.
c. The pessimistic and optimistic times are asymmetrical around the mean.
d. The standard deviation for the pessimistic estimate is higher than that for the optimistic estimate.
c. The pessimistic and optimistic times are asymmetrical around the mean.
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Indicate whether the statement is true or false
When you use the indirect strategy to deliver bad news, the recommended order of ideas is A) buffer, reasons, bad news, and closing
B) ?buffer, bad news, reasons, and closing. C) reasons, buffer, bad news, and closing. D) ?bad news, reasons, buffer, and closing.
Who works at the request of the system owners to find system vulnerabilities and plug the holes?
A. White-hat hackers. B. Black-hat hackers. C. Hactivists. D. Script kiddies.
Which of the following statements is false regarding the graph of the second-order polynomial model y = ?0 + ?1x + ?2x2 +?
a. If ?2 is negative, the graph is concave, while if ?2 is positive, the graph is convex. b. The greater the absolute value of ?2, the smaller the rate of curvature. c. When we plot x versus y, the graph is shaped like a parabola. d. All of these choices are true.