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Your average weekly grocery bill at the store you usually shop is $300. You decided to test a new strategy of buying most items over the weekend from Costco in bulk and when you fall short of some items during the week or the once not appropriate for Costco, you buy from a convenience store near you. You took a sample of your expenses for 20 weeks and found that the average is $285 and the standard deviation for the sample is $25. Set up your null and alternative hypothesis for testing whether your cists are different and do the analysis using α=.05.
Suppose the horses in a large stable have a mean weight of 1464 lbs, and a standard deviation of 111. What is the probability that the mean weight of the sample horses would differ from the population mean by less than 11 lbs if 34 horses are samp..
Recognize the given samples are independent samples or matched pairs.
Comparison of paired and unpaired samples test - Identify which of the two tests (Independent samples and Paired samples) test is the preferred test and justify your choice.
Now we would like to evaluate regression equation for X using Y as independent variable.
Determine the pairs which are significant according to LSD and what pairs are important according to Bonferroni?
If you are using exponential smoothing for forecasting an annual time series of revenues, what is your forecast for the next year if the smoothed value for this year is $32.4 million?
What can be completed to remedy multicollinearity.
Illustrate that probability distribution of X satisfies properties of a discrete probability distribution.
Insurance policy from company A costs $300 a year but guarantees to replace any losses due to theft. Create the decision tree.
Find the value of the standard normal random variable z, called z 0 such that:
The best estimator or appreciative of the population proportion is 0.45. How large must the sample be?
What sample size would be needed to estimate the true proportion of students at your college
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