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Please help explain the following:
suppose that you add 10 to all of the observations in a sample. how does this change the sample mean? how does it
Knowing that there are usually fewer women who run marathons than men, and that more people ran in the amateur marathon.
Use Chebyshev's theorem to determine the minimum percentage of observations that should fall within k = 1.50 standard deviation units of the mean. Do the sample results support the theorem?
According to an article in USA Today, 60% of 7- to 12-year-olds who use the Internet do their schoolwork on line.9 If 8 kids within this age group.
Identify the dependent variable in the Credit Approval dataset and identify the independent variables in the Credit Approval dataset and Build the confusion matrix for the training data. Include the command and the matrix in the report.
If 485 out of the next 500 orders are processed on the same day, would this prove that they are exceeding their goal, using α = .025?
What is the value of the slope of the least squares regression line for these data? Round your answer to at least four decimal places.
At the .05 significance level, is there a difference in the mean number of miles traveled per month between Cincinnati and Pittsburgh employees? Use the five-step hypothesis-testing procedure.
Using the basic weighted additive method of multiple criteria evaluation, determine which design should be recommended for the new structure.
It is believed that the population standard deviation for the length of online videos is 1.7 minutes. The website would like to set α =0.05. The critical value for this hypothesis test would be ________. Round to three decimal places.
Seven students have applied for merit scholarships. This year 3 merit scholarships were awarded. If a random sample of 3 aplications (from the population of 7) is selected,
suppose x and y have joint density fxy. are x and y independent ifa fxy xe-x1y for xy gt 0b fxy 6xy2 when xy gt 0 and
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