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# Problem Questions 1. Thermostats are subjected to rigorous testing before they are shipped to air conditioning technicians around the world. Results

I Need all the 8 questions in the attached sheet to be answered.
Problem Questions 1. Thermostats are subjected to rigorous testing before they are shipped to air conditioning technicians around the world. Results from the last five samples are shown in the table. Draw and R Chart and an x-bar chart. Based on the charts, is the process under control? (20 Points) Observations Sample 1 2 3 4 5 1 73.5 70.8 72.2 73.6 71.0 2 71.3 71.0 73.1 72.7 72.2 3 70.0 72.6 71.9 72.4 73.3 4 71.1 70.6 70.3 74.2 73.6 5 70.8 70.7 70.7 73.5 71.1 Answer 1: 2. A professor records the number of students who complain each week throughout the semester. If the class size is forty students, what are 3-sigma control limits for this class? Construct a control p-chart and interpret the data. Is the process in control? (20 points) Week number Complaints 1 5 2 2 3 7 4 1 5 3 6 2 7 8 8 1 9 3 10 5 11 4 12 6 13 3 14 1 15 4
Answer 2: 3. A department store chain is designing a layout for a new store. The store manager wants to provide as much convenience as possible for her customers. Based on historical data, the number of trips between departments per hour is given in the following closeness matrix. A block plan showing a preliminary layout is also shown. Closeness Factors (Trips per hour) 1/O 2/S 3/H 4/T 5/A 6/E 1. Office Supplies (O) --- 40 100 50 20 10 2. Sporting Goods (S) --- 100 80 60 80 3. Hardware (H) --- 70 100 50 4. Toys (T) --- 70 90 5. Automotive (A) --- 60 6. Electronics (E) --- 1. OFFICE SUPPLIES 2. SPORTING GOODS 3. HARDWARE 4. TOYS 5. AUTOMOTIVE 6. ELECTRO NICS Customer travel between departments is restricted to the aisles shown in the block plan as dotted lines. CALCULATIONS TABLE :
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## This question was asked on Sep 04, 2012 and answered on Sep 04, 2012.

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