Xyz company uses "continuous review system (q, rop)" for an item. lead-time is currently one week. the average demand during the week is 100 units with a standard deviation of 20 units. if the supplier increases lead-time to 4 weeks, what will be the standard deviation of lead-time demand?
a.40 80
b.17.89
c.44.72
d.120

The demand value of time lead is

a) 40

Step-by-step explanation:

X  Y Z company Uses "Continuous Review System for an item

Currently demand = 100 units

standard deviation =  20 units

lead time increase = 4 weeks

Apply Z statistic we get the value of standard deviation.

so the rectangle is 80cm (area)

now to find the area of a triangle.

base times height.

4 times 8.

your answer is 96cm.

hope this .