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A corporate CEO reviews the earnings of three divisions over the last eighteen months. Each division reports its earnings quarterly. Based on the earnings below, is there sufficient evidence to conclude, at the 99% level of confidence, that one of these divisions is more profitable than the others?
Division I Division II Division III42 33 2722 36 148 40 2655 20 856 13 1847 19 1
· State the null and alternate hypotheses· Calculate the sums of squares SS(total), SS(factor), and SS(error)· Calculate the degrees of freedom df(total), df(factor), and df(error)· Calculate the mean square for factor, and the mean square for error· Calculate the F-statistic· Determine the critical value(s)· State your decision: Should the null hypothesis be rejected?
Management wishes to know how many casks of each wine to make to maximize total. profit. Prepare the linear programming model for this problem.
Solve the mean and standard deviation equations
How many of these new cardholders would you expect to default? What is the standard deviation?
Construct the following confidence intervals for your data set:
The manufacture of the X-15 steel belted radial truck tire claims that the mean mileage the tire can be driven before the tread wears out is 60,000 miles.
What is the possible uses of regression and correlation analysis in doctoral-level research? Would I be able to use these techniques in my dissertation, or any application in other areas?
The chance of winning a prize for each of the 15 plays is 50-50 if you bought 15 tickets, what is the chance of winning 10 or more prizes?
Determine the expected market return on $ 20,000 if the expected return on asset is 20%, its beta is 1.5, and the risk free rate is 5 percent?
the research team to identify if accounts with larger balances consistently take advantage of their additional services. Formulate a hypothesis statement regarding our research issue.
State the decision rule using the .01 significance level. Compute the value of chi-square. What is your decision regarding H0?
For the other 25 percent of the population, the drug has no effect on colds. If an individual tries the drug for a year and has 2 colds in that time, what is the probability that the drug is beneficial to that individual?
Test the claim that the proportion of the people reporting imporvement was higher amoung the experimental treatment group than the control treatment. use z= 1.96.
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