A car manufacturer uses a continuous review system to manage inventory of one of its engine's component. The demand for the component is normally distributed with an average of 53 units per week. Current lead time is 3 weeks. The standard deviation of demand is 11 units. a. What is the probability of demand exceeding the reorder point when the reorder quantity is set at 190 units? Refer to the standard normal table as needed. The probability is \%. (Enter your response rounded to two decimal places.) b. What is the probability of demand exceeding the 190 units, if the supplier delays the lead time to 4 weeks? Refer to the standard normal table as needed. The probability is %. (Enter your response rounded to two decimal places.)