need help asap please

A hair salon orders shampoo every week from its supplier. The salon uses the periodic review model to determine the quantity to order weekly. The supplier ships the product from its warehouse in the Midwest, and the lead time to receive an order of shampoo is 3 weeks. Having enough shampoo is critical to the hair salon, so it wants an order quantity that will ensure that a stockout occurs no more than 1% of the time. If the salon uses 60 bottles of shampoo on average every week with a standard deviation of demand of 8 bottles over a 4 week period, how many bottles of shampoo should be ordered this week if four bottles are on hand? Click the icon to view the table for the 2-values for the given probabilities. The order quantity is units. (Enter your response rounded up to the next whole number.) 0 More Info swer C Standard Normal Table Service level z value 0.90 1.28 0.95 1.65 0.98 2.05 0.99 2.33 Print Done