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shapeco cook 45 sec 1.47 cool Chapter 11 5. Consider the following information. Standard Deviation Mean Observed Time Cycle 6 2.88 3.33 9.09 4.21 1.45 Cycle 7 2.56 3.01 8.66 4.IXI Cycles 2.76 2.98 8.81 3.93 1.22 Cycle 9 2.69 3.45 8.71 4 34 1.59 Cycle 10 2.35 7.12 9.11 4.22 1.42 Performance rating factor 1.1 0.8 1.0 1.2 0.7 Fregency 1 1 1 1 1 (a) Calculate the mean observed time for each work element (b) Calculate the normal time for each work clement. () Using an allowance factor of 10% based on job time, calculate the standard time for each work element and for the entire job (d) Based on the standard time, how many units should an employee performing at 100% of standard complete cach hour? Work Element (minutes) (tninutes) Performance Raling 1 1 0.4 22 0.9 2 0.1 1.2 1.2 3 0.4 4.4 0.8 4 0.2 3.6 10 (a) Determine the sample size needed if the standard time estimate is to be within 1% of the true mean 90% of the time. (b) Calculate the normal time for each work element. ( (c) Using an allowance factor of 10% based on job lime, calculate the standard time for each work element and for the entire job. 7. The first unit of a product took 180 hours to complete. A 70% learning curve is expected. (a) How long will the 19th unit take to complete? (6) How long will it take to complete the first 19 units? Subsection: (d) Based on the standard time, how many units should an employee performing at 100% of standard complete during an 8-hour day? Chapter 12 6. Consider the following information. Element1 Element 2 Element 3 Element 4 Elements (minutes) 8. Frank's an inventory review is every 7 days and they they consume anave 15 cases of milk cartons every dank's new milk carton supplier says they can deliver every 5 days. While Frank's material Courselor says they should order 45 cases as their target inventory level if they do not want to make a safety stock (minutes) (minutes) (minutes 3.27 {minutes) 4.12 2.79 9.34 1.37 Observations Cycle 1 Cycle 2 Cycle 3 Cycle 4 2.97 3.07 8.76 4.42 1.22 9. Considerational demandants, a setup cost of $20 per order, and an annual bolding copa unit of $2. If the company purcite 1200 units every time that they order, what are the total apdal setup and holding costs? 2.59 3.21 8.82 4.01 1.57 2.47 3.32 9.25 3.87 1.77 Cycles 3.21 3,46 8.85 4.45 1.98 10. Tray Enterprises uses a continuous review inventory control system. im operates 50 weeks per year, with an anual demand of 50,000 units, an ordering cost of $35 per order wilding cost of $1 per