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Compare the two sets and describe what you discover.
The following data sets shows the ages of the first seven presidents (President Washington through President Jackson) and the seven most recent presidents including President Obama. Age is given at time of inauguration.
First 7: 57 61 57 57 58 57 61
Second 7: 61 52 69 64 46 54 47
Produce a printout of the frequency tables, showing the total of both frequencies.
Construct a 99% confidence interval estimate of the population mean amount of paint in a 1-gallon can.
Given the following revenue and cost function for a business firm, calculate the break-even quantity, total revenue, total cost and total profit at break-even level of production.
what is the probability that the sample mean of IQ scores will not differ from the population mean by more than 2 points? (Round your answer to four decimal places.)
Below are revenue and profit (both in $ billions) for nine large entertainment companies.
Determine the pairs which are significant according to LSD and what pairs are important according to Bonferroni?
In the past few years out sourcing over seas has become more frequently used than before by U.S. companies. However, out souring is not with out problems. A recent survey indicates that 20% of the companies that outsource over seas use consultant.
Suppose a simple random sample of 20 non-English student have an average math score on the SAT exam of 528. What are the appropriate hypotheses?
Ohio Company provided the following information regarding its only product--ice skates.
Would the null hypothesis that the 2007 median household income was $50,000 be rejected at the 10% significance level in favor of the two-sided alternative? (Choose the correct answer)
How many individuals will it need to sample to achieve this level of accuracy and confidence?
A food snack manufacturer samples 13 bags of pretzels off the assembly line and weighs their contents. If the sample mean is 14.7 oz. and the sample standard deviation is 0.50 oz., find the 95% confidence interval of the true mean.
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