After seva'al rounds of lean imiementation and process innovation. Netix can process the return and restock in 1 day with certainty (S = 1}. lDn the other hand, delivery times {both from and to the Warehouse}H and R-are random and so is re time that a DVD stays with a customer {D}. After looking at re histograms of past transactions, the oneway deiivay time {both home and return deliveries) seems to approximately follow a normal distribution with mean of 1.5 days and standard deviation of l[l5 days. A further study shows that home delivery time and return delivery time are independent. Historical data also shows that for most new releases. the time that a DVD stays with a customer {D} is normally distributed with mean I" of days and standard deviation of 2.5 days. For re purpose of analysis. you can assume that Netflix and the Postal Service work 2-1 hours a day and 2 days a week {so that you do not have to round each number). Also, for re purpose of your analysis. you can assume that all of four time components are independent of each other. 22. [2 pts] Recall that home delivery time is approximately normally distributed with mean of 1.5 days and standard deviation of {1.5 days. What is the probability that a home delivery takes two or fewer days