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February 28, 2015

February 28, 2015

Posted by **Jan** on Sunday, July 28, 2013 at 12:47pm.

consumption. A sample of 16 people reveals the mean yearly consumption

to be 60 gallons with a standard deviation of 20 gallons.

a. What is the value of the population mean? What is the best

estimate of this value?

b. Explain why we need to use thetdistribution. What assumption do

you need to make?

c. For a 90 percent confidence interval, what is the value oft?

d. Develop the 90 percent confidence interval for the population

mean.

e. Would it be reasonable to conclude that the population mean is 63

gallons?

- Business Statistics -
**PsyDAG**, Sunday, July 28, 2013 at 12:54pma. Best estimate of the population value = sample mean.

b-e. http://www.google.com/search?client=safari&rls=en&q=t+test+statistics&ie=UTF-8&oe=UTF-8

- Business Statistics -
**Tony**, Sunday, March 16, 2014 at 2:47pma sample of 16 people reveals the mean consumption to be 60 gallons with the standard of deviation of 20 gallons

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