Base your analysis on the supplied data and assume “all else is equal” between the two suppliers. In other words, cost per unit, quality, TCO, etc. do not need to be considered. Do not concern yourself with any other issues or data other than that which is given below.
Your mean requirement (demand) per day: 700 units.
Standard deviation of your daily requirement: 65 units.
Mean lead-time: 7 days
Standard deviation of lead-time: 1 day
Mean lead-time: 5 days
Standard deviation of lead-time: 2 days