Business Statistics Discussions(2) and 1 Assignment


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****Do not copy or paste from a previous assignment you may have done for someone else or from the internet. Plagiarism will be checked. 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. ****

Suppose 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:



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.

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?

Use the Internet to research articles on the hypothesis test and its application in business. Select one (1) company or organization which utilized the hypothesis test technique for its business process (e.g., whether providing flexible work hours improves employee productivity). Give your opinion as to whether the utilization of such a technique improved business process for the selected company or organization. Justify your response.   Search the Internet for an article that supports your position and post the link in your thread for everyone to read.

Please discuss the following prompts. 

• Determine the top three (3) concepts or skills you learned in this course that you believe will be the most useful to you in your present or future professional career (law enforcement) or education. Provide at least one (1) specific example to support your response.  **Suggestion(the process-improvement framework, DOE technique, and the confidence interval technique.)

• Provide a rationale as to why the three (3) aforementioned concepts or skills are important to someone in the field of business statistics.


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