Average weekly demand =68,429 Based on the weekly demand information for the last 26 weeks included in the graph, ESTIMATE the level at which you must set the production level (same level for all 26 weeks) to ensure that you have a 90% probability that of demand is covered by the production. Tips: The answer involves Z-values, standard deviations, and other related statistical variables ((). If you get it right you will get 10 points towards Quiz 1. Make sure you include the calculations I have included reference lines to better estimate the values of each weekly demand