A small computing center has found that the number of jobs submitted per day to its computers has a distribution that is approximately mound-shaped and symmetric, with a mean of 88 jobs and a standard deviation of 7. Where do we expect approximately 95% of the distribution to fall?
A) between 74 and 102 jobs per day
B) between 81 and 95 jobs per day
C) between 67 and 109 jobs per day
D) between 102 and 109 jobs per day

Question

Quizplus · Accepted Answer

Approximately 95% of the distribution falls within 2 standard deviations of the mean. 88 +/- 2(7) = 74 to 102.

A Small Computing Center Has Found That the Number of Jobs