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Question: A senior analyst working for Ameritrade has reviewed purchases his customers have made over the last six months. He has categorized the mutual funds purchased into eight categories: (1) Aggressive Growth (AG), (2) Growth (G), (3) Growth-Income (G-I), (4) Income Funds (IF), (5) International (I), (6) Asset Allocation (AA), (7) Precious Metal (PM), and (8) Bond (B). The percentage gains accrued by 3 randomly selected customers in each group are as follows:
a. Develop the appropriate ANOVA table to determine if there is a difference in the average percentage gains accrued by his customers among the mutual fund types. Use a significance level of 0.05.
b. Use the Tukey-Kramer procedure to determine which mutual fund type has the highest average percentage gain. Use an experiment-wide error rate of 0.05.
A researcher selected a sample of 50 residents from each of three different cities to determine if they were willing to participate in a medical experiment. At a = .05, test the claim that the proportions who will participate are equal.
ACME Lumber Company selects a random sample of 36 customers. Customers are rated on their annual spend at ACME Lumber Stores.
Compare the effectiveness of three methods of teaching (IV). You plan to administer a standardized test (DV measured on an interval scale measuring knowledge acquisition) to the students in three classes with each class using a different teaching ..
How many lefties do you expect?- With what standard deviation?- If we keep picking people until we find a lefty, how long do you expect it will take?
retired workers and disabled workers both receive social security benefits. what information would we need to test the
The scores, X, of an examination may be assumed to be normally distributed with μ = 70 and σ2 = 49. What is the probability that:
Samples of size 49 are taken from a population with a σ of 17. If the mean of the sample is 25, what is the confidence interval at the 90% confidence level
The procedure square-list takes a list of numbers as argument and returns a list of the squares of those numbers. (square-list (list 1 2 3 4)) (1 4 9 16) Here are two different definitions of square-list. Complete both of them by filling in the mi..
If he were to randomly select 120 corks from the next box, then how many of these corks would John expect to be undersized?
All numbers are in thousands of dollars per year.- Conduct the test at α = 0.05, and evaluate the effectiveness of the programs in terms of increased average salary levels.
The average U.S. family includes 3.17 persons. - For the significance level used, construct the appropriate confidence interval and verify the conclusion reached.
suppose the monthly income of assistant managers of our local banks are normally distributed with mean of 40000 and a
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