The widths of 79 randomly selected window blinds were found to have a standard deviation of 2.37. Construct the 95% confidence interval for the population standard deviation of the widths of all window blinds in this factory. Round your answers to two decimal places. Lower endpoint: Upper endpoint:

Consider the following table:   SS DF MS F Among Treatments   1 611.92   Error     448.64   Total 5995.6 13   Step 1 of 8: Calculate the sum of squares among treatments. Please round your answer to two decimal places. Step 2 of 8: Calculate the sum of squares of experimental error. Please round your answer to two decimal places. Step 3 of 8: Calculate the degrees of freedom of experimental error. Step 4 of 8: Calculate the F-value. Please round your answer to two decimal places. Step 5 of 8: What is the sum of squares of sample means about the grand mean? Please round your answer to two decimal places. Step 6 of 8: What is the variation of the individual measurements about their respective means? Please round your answer to two decimal places. Step 7 of 8: What is the critical value of F at the 0.01 level? Please round your answer to four decimal places, if necessary. Step 8 of 8: Is F significant at 0.01?

Question 2: Consider again that the company making tires for bikes is concerned about the exact width of its cyclocross tires. The company has a lower specification limit of 22.8 mm and an upper specification limit of 23.2 mm. The standard deviation is 0.15 mm and the mean is 23 mm. What is the probability that a tire will either be too wide or too narrow?

ASQ (The American Society for Quality) Defines a Six Sigma project as: Six Sigma is a method for reducing variation in manufacturing, service, or other business processes. Six Sigma projects measure the cost benefit of improving processes that are producing substandard products or services. Whether in manufacturing or service industries, such projects quantify the effect of process changes on delays or rework. The goal of each successful Six Sigma project is to produce statistically significant improvements in the target process; over time, multiple Six Sigma projects produce virtually defect-free performance. The Six Sigma Black Belt project is one that uses appropriate tools within a Six Sigma approach to produce breakthrough performance and real financial benefit to an operating business or company. The tools are generic. It is the structure of the project and the associated process (improvement model) that distinguish a Black Belt project from other similar quality improvement…