The assembly time for a product is uniformly distributed between 6 and 10 minutes. The standard deviation of assembly time (in minutes) is approximately _____.
A) .33
B) .13
C) 16
D) None of the answers is correct.

Question

Quizplus · Accepted Answer

The standard deviation for a uniform distribution is calculated as sqrt((b-a)^2/12), where b is the maximum value and a is the minimum value. For this distribution, b=10 and a=6, so the standard deviation is sqrt((10-6)^2/12) = sqrt(16/12) = sqrt(4/3) ≈ 1.15, which is not listed among the options.

The Assembly Time for a Product Is Uniformly Distributed Between