1. Estimate the number of repetitions each of the workers listed in the following table will require to achieve 24 minutes per repetition. Time is in minutes. Worker Beverly Max Ti minutes 36 T2 minutes 32 44 2. Use U/D run test to analyze the daily expense voucher listed. Day Amount Day Amount Day Amount Day 1 S5870 11 $6532 21 55967 31 2 5724 12 5334 22 5678 32 3 5278 13 5129 23 5733 33 4 4818 14 5086 24 6521 34 5 4490 15 5037 25 6325 35 6 16 5007 26 7023 36 7 5222 17 5360 27 6958 37 8 5428 18 5355 28 7297 38 9 5130 19 5780 29 7351 39 10 5828 20 5640 30 6392 40 Amount S6106 6880 7134 7160 6446 6375 6525 6327 6848 5938 5032 3. The manager of a car wash received a revised price list from the vendor who supplies soap, and a promise of a shorter lead time for deliveries. Formerly the lead time was four days, but now the vendor promises a reduction of 25 percent in that time. Annual usage of soap is 5,400 gallons. The car wash is open 300 days a year. Assume that daily usage is normal, and that it has a standard deviation of 2 gallons per day. The ordering cost is $30 and annual carrying cost is $2.5 a gallon. The revised price list (cost per gallon) is shown in the following table: What order quantity is optimal? b. What ROP is appropriate if the acceptable risk of a stock-out is 2.5%? a. Unit price Range 1-299 300-899 900+ S2.00 $1.80 $1.62 1. Estimate the number of repetitions each of the workers listed in the following table will require to achieve 24 minutes per repetition. Time is in minutes. Worker Beverly Max Ti minutes 36 T2 minutes 32 44 2. Use U/D run test to analyze the daily expense voucher listed. Day Amount Day Amount Day Amount Day 1 S5870 11 $6532 21 55967 31 2 5724 12 5334 22 5678 32 3 5278 13 5129 23 5733 33 4 4818 14 5086 24 6521 34 5 4490 15 5037 25 6325 35 6 16 5007 26 7023 36 7 5222 17 5360 27 6958 37 8 5428 18 5355 28 7297 38 9 5130 19 5780 29 7351 39 10 5828 20 5640 30 6392 40 Amount S6106 6880 7134 7160 6446 6375 6525 6327 6848 5938 5032 3. The manager of a car wash received a revised price list from the vendor who supplies soap, and a promise of a shorter lead time for deliveries. Formerly the lead time was four days, but now the vendor promises a reduction of 25 percent in that time. Annual usage of soap is 5,400 gallons. The car wash is open 300 days a year. Assume that daily usage is normal, and that it has a standard deviation of 2 gallons per day. The ordering cost is $30 and annual carrying cost is $2.5 a gallon. The revised price list (cost per gallon) is shown in the following table: What order quantity is optimal? b. What ROP is appropriate if the acceptable risk of a stock-out is 2.5%? a. Unit price Range 1-299 300-899 900+ S2.00 $1.80 $1.62
