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Question: In problem, construct a 95% confidence interval for the difference between the average return to investors following a no recommendation and the average return to investors following a yes recommendation. Interpret your results.
Problem: Mark Pollard, financial consultant for Merrill Lynch, Pierce, Fenner & Smith, Inc., is quoted in national advertisements for Merrill Lynch as saying: "I've made more money for clients by saying no than by saying yes." Suppose that Pollard allowed you access to his files so that you could conduct a statistical test of the correctness of his statement. Suppose further that you gathered a random sample of 25 clients to whom Pollard said yes when presented with their investment proposals, and you found that the clients' average gain on investments was 12% and the standard deviation was 2.5%. Suppose you gathered another sample of 25 clients to whom Pollard said no when asked about possible investments; the clients were then offered other investments, which they consequently made. For this sample, you found that the average return was 13.5% and the standard deviation was 1%. Test Pollard's claim at α = 0.05. What assumptions are you making in this problem?
Considering the effect that colonialism has had on the world today, how has and/or does Colonialism continue to affect the world? Choose one country or area that we have studied and discuss the continuing effects of colonialism in that region.
Determine the probability that no female are hired. Determine the mean and standard deviation of X.
Clearly define the dependent and independent variables that are the focus of the team's study. The dependent variable is the variable whose value is the result or is a function of the control or independent variables.
If a random sample of 100 batteries is selected and tested, is it likely that the average battery in the sample will last less than 24 hours of continuous use? Explain.
As the video titled "Melissa Forman - Hilarious Resume Typos" (4 min 55 s) located at https://www.youtube.com/watch?v=FClWySJ6Sxs demonstrates it is very important to avoid mistakes when writing resumes and cover letters.
If the probability that she dies in the coming year is 0.001, what is the expected gain for the insurance company?
Bring to mind a research question that interests you, or a current event that utilizes statistics to present results, that you can use as an example for this discussion. State the research question or the current event and results.
In a random sample of 810 women employees, it is found that 81 would prefer working for a female boss. The width of the 90 percent confidence interval for the proportion of women who prefer a female boss is:
the following problem should be answered in r. any answers partial or complete would be greaty appreicatedgenerate 50
How do I find T, S and B multiples if g=2,5,and 10 pairwise comparisons are to be made with a 95 percent family confidence coefficient
If we combine them, considering the overall group to be one larger random sample, what is a 95% confidence interval for the proportion of the general public that thinks the death penalty is being fairly applied?
Develop a simple regression model to redict models, (B) gender is a necessary variable, Data were collected for 32 plants. The data were used to fit the model and the SAS printout of the multiple regression analysis is shown below.
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