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Are there any thoughts a question involving standard deviation
The makers of a soft drink want to identify the average age of its consumers. A sample of 25 consumers was taken. The average age in the sample was 22.5 years with a sample standard deviation of 4.5 years. Please answer the following questions:
a. Construct a 95% confidence interval estimate for the mean of the consumers' age.
b. Suppose a sample of 41 was selected (with the same mean and the sample standard deviation). Construct a 90% confidence interval for the mean of the consumers' age.
Conduct a complete Chi-Square Goodness-Of-Fit Test as outlined in your Handout.
How would we set up this hypothesis test? What would be our Ho and Ha? How about the alpha value? What means are we comparing?
Under President Washington, Secretary of War Henry Knox had hoped to pursue a more peaceful policy with the Indians. How did U.S. policy concerning the Indians unfold in the 1790s?
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a government survey conducted to estimate the mean price of houses in a metropolitan area is designed to have a margin
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the sample revealed a sample mean of 11.7 ounces with a standard deviation of .8 ounces test to see if the population mean is at least 12 ounces using the .05 level of significance.
Let the random variable X be the total number of days for both packages to arrive. Construct the probability distribution for X
let r be the region in the first quadrant bounded by the curves yx and yx5. a random point xy is selected from r. a
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