Estimate the population mean flying time for the pilots, Basic Statistics

The mean number of hours of flying time for pilots at Continental Airlines is 49 hours per month (The Wall Street Journal, February 25, 2003). Assume that this mean was based on actual flying times for a sample of 100 Continental pilots and that the sample standard deviation was 8.5 hours.

a. At 95% confidence, what is the margin of error?

b. What is the 95% confidence interval estimate of the population mean flying time for the pilots?

c. The mean number of hours of flying time for pilots at United Airlines is 36 hours per month. Use your results from part (b) to discuss differences between the flying times for the pilots at the two airlines. The Wall Street Journal reported United Airlines as having the highest labor cost among all airlines. Does the information in this exercise provide insight as to why United Airlines might expect higher labor costs?

 

Posted Date: 3/30/2013 7:38:38 AM | Location : United States







Related Discussions:- Estimate the population mean flying time for the pilots, Assignment Help, Ask Question on Estimate the population mean flying time for the pilots, Get Answer, Expert's Help, Estimate the population mean flying time for the pilots Discussions

Write discussion on Estimate the population mean flying time for the pilots
Your posts are moderated
Related Questions
Q. Example of inference? Ans. Thirty students from a college were surveyed and classified according to two variables: (1) gender (M/F) and (2) major (liberal arts, busines

Susan’s proposed budget for 2011 includes a substantial repayment of the bank loan. If the repayment occurs, is the firm likely to break even in 2012? Explain.

The annual precipitation amounts in a certain mountain range are normally distributed with a mean of 89 inches, and a standard deviation of 16 inches. What is the probability that

1.The resumés of 2 males applicants for a college teaching position in chemistry are places in the same file as the resumés of 2 female applicants. Two positions become available a

Impulse and Momentum Theorem   Impulse is known as the change in momentum of any object:  j  = Δ p   Momentum  is a product of the mass & the velocity of an object, and is a v

The company acquired 50000 8% preferencd shares (with a par value of R4 each) in cross limited on 30 june 2006 for R180000.transaction costs at the acquisition date amounted to R12

What are the advantages and disadvantages of index numbers

Suppose we wanted to compare the somatic complaints (as measured on a scale known as the Physical Symptom Survey or PSS) of three groups of people; nonsmokers, smokers, and people

Job Order Gosting ln an attempt to conceal a thefi of funds, Kaito Kid, controller of Shinichi Products, lnc. placed a bomb in the company s record vault. The ensuing explosion lef