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Question: Managers of a major book publisher believe that the occurrence of typographical errors in the books the company publishes is Poisson distributed with a mean of 0.2 per page. Because of some customer quality complaints, the managers have arranged for a test to be conducted to determine if the error distribution still holds. A total of 400 pages were randomly selected and the number of errors per page was counted. These data are summarized in the following frequency distribution:
Errors Frequency
0 335
1 56
2 7
3 2
Total 400
Conduct the appropriate hypothesis test using a significance level equal to 0.01. Discuss the results.
The company sells Mr. Brophy an insurance policy and he has an accident. What's the probability of Mr. Brophy being a good, medium or poor driver?
What are precision and accuracy?
Construct a 95% confidence interval estimate for the population proportion of airline travelers who think that the airline fee that is most unreasonable is additional charges to redeem point/miles.
Begin by deciding whether to use a one-tailed or a two-tailed test. Calculate a t test and interpret your results. Be sure to carry several decimal places in your work on this problem.
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In a transportation problem with 5 supply points, 3 demand points, and total supply equaling total demand, the number of decision variables will be:
What were the key events that marked the move toward American Independence?
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