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An auditor takes a randon sample of size 49 from a population of 1500 accounts receivable. The mean value of the accounts receivable for the population is know (from a previous large survey) to be $3000 with the standard deviation of $400. Find the 99% confidence interval for the sample mean.
A sample of the length of time it took 42 persons to assemble the unit was organized into the following frequency distribution. What is the standard deviation (in minutes)?
Roger has read a report that the weights of adult mail Siberian tigers have a distribution which is approximately normal with mean μ = 390 lb and σ = 65 lb.
Commute times: three random samples of time in minutes that commuters are stuck in traffic are shown. At anova =0.05, is there a difference in the mean times among the three cities?
A standard deviation of 1.5. The distribution is normal. What proportion of faculty consume an amount between 4 and 6 cups?
At 95% confidence, test to determine if more than 21% of the population will like the new soft drink.
Utilizing form of Regression method which would give you highest performing model to forecast Sales. Utilizing your model forecast the sales
How do question content and wording, response strategy, and preliminary analysis planning affect question construction?
Is there a difference in the mean allowances nationally and the mean allowances in northwestern Ohio for nine-year-olds?
Election poll reported that applicant had n approval rating 31% with margin of error E of 4%. Create a confidence interval for proportion of adults who approved of applicant.
Fifty samples of size 600 were drawn from a manufacturing process and the number of defectives in each sample was counted.
A researcher conductued a study of the access speed of 35 hard drives and concluded that his maximum error of estimate was 35. If he were to conduct a second study to reduce the maximum error of estimate to 7, about how many hard drives should he ..
Chrysler Corporation agrees to allow you to randomly select 40 of its new Dodge Caravans to test the highway mileage. Chrysler claims that the caravans get 28mpg on the highway.
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