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Rutter Nursery Company packages its pine bark mulch in 50 pound bags. From a long history, the production department reports that the distribution of the bag weights follows the normal distribution and the standard deviation of this process is 3 pounds per bag. At the end of each day, Jeff Rutter, the production manager, weighs 10 bags and computes the mean weight of the sample. Below are the weights of 10 bags from today's production.
45.6, 47.7, 47.6, 46.3, 46.2, 47.4, 49.255.8, 47.5, 48.5
A. Can Mr. Rutter conclude that the mean weight of the bags is less than 50 pounds? Use the 0.1 significance level.B. In a brief report, tell why Mr. Rutter can use the z distribution as the test statistic.C. Compute the p-value.
Do men and women have different beliefs on the ideal number of children in a family? Based on the following GSS2008 Data and the obtained t statistics, what would you conclude?
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Given that x and y are both positive, solve the simultaneous equations.
The following random sample was collected: 22 33 44 6 The 80% confidence interval for the mean is?
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A sample of 25 MBA students taking OTM course in the Spring of 2013 shows an average income of $85,000 with the sample standard deviation of $5,000. Find the 95% confidence interval of the population mean income of MBA students.
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Either direction from what would have been obtained by interviewing all voters in the United States. Find the sample size suggested by this statement.
Given the following data on the number of pints of ice cream sod at a local ice cream store for a 6 period time frame. Compute a 3 period moving average for period 4
Suppose you were to cut up the directory and pull out one listing at random to contact.
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