300 deliveries
1. If you are unable to change the standard deviation of thedelivery time, what should be the average delivery time so that nomore than 5% of the deliveries are late (late = takes more than 9hours)
Current average delivery time = 8 hours, standard deviation ofdelivery time = 1 hour
Target average delivery time: _________ hours (round your answerto 2 decimal points)
2. If you are unable to change the average delivery time, whatshould be the standard deviation of the delivery process so that nomore than 5% of the deliveries are late (late = takes more than 9hours)
Current average delivery time = 8 hours, standard deviation ofdelivery time = 1 hour
Target standard deviation of delivery time: _________ hours(round your answer to 2 decimal points)
