Answer:
the standard deviation of demand during the 4-day lead time is 30
Step-by-step explanation:
the computation of the standard deviation of demand during the 4-day lead time is given below;
= Sqrt(Lead time) × Std deviation daily demand
= Sqrt(4) × 15
=2 × 15
= 30
Hence, the standard deviation of demand during the 4-day lead time is 30