The manager of a computer help desk operation has collected enough data to conclude that the distribution of time per call is normally distributed with a mean equal to 8.21 minutes and a standard deviation of 2.14 minutes. Based on this, what is the probability that a call will last longer than 13 minutes?
A. About 0.0125
B. Approximately 0.4875
C. About 0.5125
D. About 0.9875
Answer:A
The manager of a computer help desk operation has collected enough data to conclude that the distribution of time per call is normally distributed with a mean equal to 8.21 minutes and a standard deviation of 2.14 minutes. Based on this, what is the probability that a call will last longer than 13 minutes?
A. About 0.0125 B. Approximately 0.4875 C. About 0.5125 D. About 0.9875