Exhibit 6-1
The assembly time for a product is uniformly distributed between 6 to 10 minutes.
-Refer to Exhibit 6-1. The standard deviation of assembly time (in minutes) is approximately
A)1.3333
B)1.1547
C)0.1111
D)0.5773

Question

Quizplus · Accepted Answer

The formula for the standard deviation of a uniform distribution is (b-a)/sqrt(12), where a is the lower limit and b is the upper limit. In this case, a=6 and b=10. Therefore, the standard deviation is (10-6)/sqrt(12) = 1.1547 (rounded to four decimal places). Therefore, the answer is B.

Exhibit 6-1 The Assembly Time for a Product Is Uniformly Distributed Between