Find confidence intervals for the average call times

Reference no: EM131438876

Question: A study of nonfatal occupational injuries in the United States found that about 31% of all injuries in the service sector involved the back. The National Institute for Occupational Safety and Health (NIOSH) recommended conducting a comprehensive ergonomics assessment of jobs and workstations. In response to this information, Mark Glassmeyer developed a unique ergonomic handcart to help field service engineers be more productive and also to reduce back injuries from lifting parts and equipment during service calls. Using a sample of 382 field service engineers who were provided with these carts, Mark collected the following data:

Year 1 Year 2

(without Cast) (with Cart)

Average can time 8.27 hours 7.98 hours

Standard deviation 1.38 hours 1.21 hours

call time

Proportion of back 0.018 0.010

injuries

Find 95% confidence intervals for the average call times and proportion of back injuries in each year. What conclusions would you reach based on your results?

Reference no: EM131438876

Questions Cloud

What is the margin of error : A random sample of 100 teenagers was surveyed, and the mean number of songs that they had downloaded from the iTunes store in the past month was 9.4 with the results considered accurate is within 1.4 (18 times out of 20).

How will the partnership income gain and loss : Assume that the partnership operates for two years, and then sells the building at the end of year 2 for, alternatively, $1,100 or $800. How will the partnership's income, gain, loss and deduction (including depreciation deductions) be allocated ..

How did the doctor handle himself in this scene : how did the doctor handle himself in this scene? If Jim Carey were your family member, would you be satisfied with the provider's composure or would you think the provider is not being engaged enough with the patient given this is obviously an "A-..

What advice would you offer to henry : Let's call him and see what he says.""Good idea," agreed Henry. "Do you have his number?" "I think so. Let me look," mumbled Josepha, looking into her briefcase. While Josepha searches for the telephone number, what advice would you offer to Henry..

Find confidence intervals for the average call times : A study of nonfatal occupational injuries in the United States found that about 31% of all injuries in the service sector involved the back. The National Institute for Occupational Safety and Health (NIOSH) recommended conducting a comprehensive e..

What is the raw process time found : What is the raw process time T0 found from summing the te's from table above (Enter to 2 decimal places with leading zero before the decimal)

Organization cultures in health : Select any combination three of the six "Organization Cultures in Health" presented in chapter 9 (pages 162 - 170). Students will write a minimum of 2 pages (but no more than 3 pages) APA style paper. The cover page and reference page are not incl..

Should taxes on alcohol and tobacco be increased : Provide a concluding paragraph to summarize the proposed solution, its advantages, possible disadvantages, and answers to the disadvantages. Repeat or paraphrase your thesis statement.

Regulation of the health care industry : As health care leaders, it is important to understand that health care is quite a dynamic field. Its constant changes are a result of continuing trends in regulation, policy, patient and provider advocacy efforts, as well as increasingly sophistic..

User Account

All Pages