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How many different tests does the textbook give you for applying the chi-square distribution? What are these tests? How could you use each of these tests at your place of business?
a. Use a 3-period moving average to make a forecast for December 1, 2010.
At a fast food resturant, the expected number of customers who will spend atleast $10 during lunch period from 12:00 to 2:00 is 221 and the variance is 33.15. Assume this is a binomial model.
it is known that the population standard deviation of weight among females is 15. assuming that we have a random sample
Test the claim that there is difference in the mean ages of the two groups. Use a = 0.01.
Does the Law of Large Numbers allow us to predict the proportion of heads that will turn up in the long run? After we have observed a large number of tosses, can we tell which coin was chosen? How many tosses suffice to make us 95 percent sure?
if you were given a large data set such as the sales over the last year of our top 1000 customers what might you be
5 patients qualify to have a surgical procedure performed. The doctor states that there is an 80% chance of a successful surgery.
During our examination of the foundations of western culture, we have wrestled with the questions, "What is a good human being? What is the good life?
48 or fewer will answer the question correctly. What is the z-score that you should look up in the z-table to find the desired probability?
Assuming that the difference of each pair is coming from an approximately normal distribu- tion, test if there is any difference in the individuals' driving ability under the two conditions. Use α = 0.05.
What were the difficulties that Japanese Americans, African Americans, and women faced during WorldWar II?
a study of the net sales of a sample of small corporations revealed that the mean net sales is 2.1 million the median
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