group project

# group project - Workshop 6 Group Review Questions 1...

• Notes
• 23
• 83% (6) 5 out of 6 people found this document helpful

This preview shows pages 1–3. Sign up to view the full content.

Workshop 6 Group Review Questions 9.69 b.Compute the p-value and interpret its meaning. Do not reject the null hypothesis 9.72 Step 1 1. Complete six of the following problems with your team. Note: use Excel whenever pos for you to ask questions and to assist your peers with their questions: a. Chapter 9: 9.69, and 9.72 through 9.74. b. Chapter 10: 10.28, 10.29, and 10.83. 2. Save your work and submit your team’s answers via Submit Assignments. All work MUS to the location cell on the specific worksheet that contains the answer. Remember that your credit. Late payments of medical claims can add to the cost of health care. An article reported that for one insurance c 85.1% of the claims were paid in full when first submitted. Suppose that the insurance company developed a n payment system in an effort to increase this percentage. A sample of 200 claims processed under this system r 180 of the claims were paid in full when first submittted. a.At the 0.05 level of significance, is there evidence that the proportion of claims processed under this new system is higher than the article reported for the previsou system? A wall Street Journal poll asked respondents if they trusted energy-efficiency ratings on cars and appliances; 5 responded yes and 531 responded no. a.At the 0.05 level of significance, use the six-step critical value approach to hypothesis testing to try to prove that the percentage of people who trust energy-efficiency ratings differ from 50%.

This preview has intentionally blurred sections. Sign up to view the full version.

Step 2 Step 3 Step 4 Step 5 Step 6 b.Use the five step p-value approach. Step 1 Step 2 Step 3 Step 4 Step 5 c.Intepret the results 9.73 One of the biggest issues facing e-retailers is the ability to reduce the proportion of customers who cancel their transactions after they have selected their products. It has been estimated that about 1/2 of prospective custom their transactions after they have selected their products. Suppose a company changed its Web site so that cust could use a single-page checkout process rather than multiple pages. A sample of 500 customers who had sele products were provided with the new checkout. Of these 500 customers, 210 canceled their tranactions after th selected their products. a.At the 0.01 level of significance, is there evidence that the proportion of customers who selected products and then cancelled their transaction was less than 0.50 with the new system?
This is the end of the preview. Sign up to access the rest of the document.
• Spring '10
• Jeff
• Statistics, Null hypothesis, Bone marrow, Statistical hypothesis testing

{[ snackBarMessage ]}

### What students are saying

• As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

Kiran Temple University Fox School of Business ‘17, Course Hero Intern

• I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

Dana University of Pennsylvania ‘17, Course Hero Intern

• The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

Jill Tulane University ‘16, Course Hero Intern