Consider a periodic review system with a time between orders of 4 weeks, a lead time of 21 weeks, average weekly demand of 100 units, variance (sigma^2) per week of 49 units, and a cycle service level of 91.5%. What is the standard deviation of demand during the protection interval?

Question 26 options:

a)

5

b)

7

c)

32

d)

10

e)

12