Friday
August 29, 2014

Posts by Samantta


Total # Posts: 10

business statistics
The average length of a flight by regional airlines in the United States has been reported as 299 miles. If a simple random sample of 30 flights by regional airlines If The average length of a flight by regional airlines in the United States has been reported as 299 miles. If ...
August 1, 2009

business statistics
A mortgage broker is offering home mortgage at a rate of 9.5% but is fearful that this value is higher than many others are charging. A sample of 40 mortgages files in the country court house shows an average of 9.25% with a standard deviation of 8.61%. Does this sample ...
August 1, 2009

business statistics
If you are interested in determining the average of a 3-minute telephone call to locations within the continental U.S. what sample size must you take to be 96% confidential that the results will be within $.75 of the true mean cost per call? From the phone company, you have ...
August 1, 2009

business statistics
A random sample of size 15 taken from a normally distributed population reveled a sample mean of 75 and a sample variance of 25. The upper limit of a 95% confidence interval for the population mean would equal?
August 1, 2009

business statistics
The average length of a flight by regional airlines in the United States has been reported as 299 miles. If a simple random sample of 30 flights by regional airlines If The average length of a flight by regional airlines in the United States has been reported as 299 miles. If ...
July 31, 2009

business statistics
The International Council of Shopping Centers reports that the average teenager spends $39 during a shopping trip to the mall. The promotions director of a local mall has used a variety of strategies to attract area teens to his mall, including live bands and “teenage ...
July 31, 2009

business statistics
what are some ways management can prevent political behavior?
July 31, 2009

business statistics
why the use of calculators and/or computer programs is good or bad for students taking Business statistics?
July 30, 2009

business statistics
An assembly process includes a torque wrench device that automatically tightens compressor housing bolts; the device has a known process standard deviation of ó = 3 lb-ft in the torque applied. A simple random sample of 35 nuts is selected, and the average torque to ...
July 30, 2009

statistics
during the month of July, an auto manufacturer gives its production employees a vacation period so it can tool up for the new model run. In surveying a simple random sample of 200 production workers, the personnel director finds that 38% of them plan to vacation out of state ...
July 29, 2009

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