****Do not copy or paste from a previous assignment you  may have done for someone else or from the internet. All references and citations must be in and below the appropriate work on a reference page if applicable. All work must be done with substance, no rambling. The professor will be checking for plagiarism and any other type of duplication.****

Assignment- Due Feb 20, 2018: Analyze customer data to reduce errors                                                                                      Table: Invoice Experiment ErrorCustomer Size    Customer Location    Product Type    Number of Errors              –                                      –                                    –                                         15              +                                     –                                    –                                         18              –                                     +                                    –                                            6               +                                    +                                    –                                            2               –                                      –                                    +                                         19               +                                     –                                    +                                         23               –                                     +                                    +                                         16               +                                    +                                    +                                         21

Customer Size: Small (-), Large (+)

Customer Location: Foreign (-), Domestic (+)

Product Type: Commodity (-), Specialty (=)

Reference: Moen, Nolan, and Provost (R. D. Moen, T. W. Nolan and L. P. Provost. Improving Quality through Planned Experimentation. New York: McGraw-Hill, 1991)

Use the date in the table above and answer the following questions in the space provided below:1. What is the nature of the effects of the factors studied in this experiment? 2. What strategy would you use to reduce invoice errors, given the results of this experiment?

Assignment- Due Feb 20, 2018Suppose the number of equipment sales and service contracts that a store sold during the last six (6) months for treadmills and exercise bikes was as follows:                                                                                      Treadmill          Exercise Bike                                                 Total sold                                    185                           123 Service contracts                      67                              55 

The store can only sell a service contract on a new piece of equipment. Of the 185 treadmills sold, 67 included a service contract and 118 did not. 

Complete the following questions in the space provided below: 1. Construct a 95 percent confidence interval for the difference between the proportions of service contracts sold on treadmills versus exercise bikes. 2. Is there a major difference between the two pieces of equipment? Why or why not?

Discussion: Due Feb 20, 2018 1 ½ Paragraphs of substance (no copying and pasting)• Use the Internet to research articles on confidence interval and its application in business. Select one (1) company or organization which utilized the confidence interval technique to measure its performance parameters (e.g., mean, variance, mean differences between two processes, etc.). Give your opinion as to whether the utilization of such a technique improves business processes for the company or organization that you selected. Justify your response.   

Search the Internet for an article that supports your position and post the link in your thread for everyone to read.