Would the interval constructed in still be appropriate

Assignment Help Basic Statistics

Reference no: EM131405217

The service manager of Appliance Universe has recorded the times for a simple random sample of 50 refrigerator service calls taken from last year's service records. The sample mean and standard deviation were 25 minutes and 10 minutes, respectively.

a. Construct and interpret the 95% confidence interval for the mean.

b. It's quite possible that the population of such times is strongly skewed in the positive direction - that is, some jobs, such as compressor replacement, might take 3 or 4 hours. If this were true, would the interval constructed in part (a) still be appropriate? Explain your answer.

Reference no: EM131405217

Questions Cloud

Negative aspects of doing a job analysis : Give two positive aspects of doing a job analysis and give two negative aspects of doing a job analysis. Defend your answers.

Requirements for logistics support : Discuss how the requirements for logistics support are significantly influenced by reliability factors.

Construct confidence interval for average number of defects : Given that the population standard deviation is not known, which of these two confidence intervals should be used as the interval estimate for μ?

Advantages to offshoring and outsourcing : What are the advantages to offshoring and outsourcing for the company and consumer? Disadvantages? What are the popular alternatives?

Would the interval constructed in still be appropriate : It's quite possible that the population of such times is strongly skewed in the positive direction - that is, some jobs, such as compressor replacement, might take 3 or 4 hours. If this were true, would the interval constructed in part (a) still b..

Estimate the degree of market saturation : Explain how a supermarket retailer can estimate the degree of market saturation for a given location?

How technology is transforming future of national securiy : Summarize each of the readings in the tables below.You may expand the table to accommodate your information. Write in complete sentences using proper grammar and mechanics.The CIA Can't Hack Senate Computers Because they Own Them, Experts Say.How Tec..

New provisions to the affordable care act : Analyze at least two (2) new provisions to the Affordable Care Act. Interpret the implications of these new provisions for access to care for families. Provide specific examples of such implications to support your rationale.

Construct and interpret the confidence interval : Given this confidence interval, would it seem very unusual if another sample of this size were to have a mean of 16.5 faxes?

User Account

All Pages