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(a) Interpret the following two effect sizes: d = .87; d = .18.(b) Given a mean difference of 6 and population SD of 4 what is the effect size? Interpret your result.
Write a computer algorithm that simulates a hypergeometric random variable with parameters - Show that you can choose your die so that you have probability 2/3 of winning no matter which die your friend picks.
Based on eight universities in each of two different regions, is there a difference between university rankings based on their regional locations? Perform a Mann-Whitney U test, being sure to follow the directions under the table.
Using the constant a 5 0.3, ?t an exponentially smoothed curve to the original time series. Repeat part (c) using a 5 0.7. How has the new value for the constant affected the smoothness of the ?tted curve?
Many retail stores offer their own credit cards. At the time of the credit application the customer is given a 10 percent discount on the purchase.
A Department of Trasporta repot about air travel found that nationwide, 76% of all flights are on time. What is the probablity that you will have have excatly 80 flights on time?
the following paired samples have been obtained from normally distributed populations. construct a 90 confidence
One-fourth of the residents of the Burning Ridge Estates leave their garage doors open when they are away from home. The local chief of police estimates that 5 percent of the garages with open doors will have something stolen
Find the value of N which maximizes the expression in part (b). This value is called the maximum likelihood estimate for the unknown quantity N
In the other group 40 out of 80 favored capital punishment. Calculate an appropriate test value to test the hypothesis that the population proportions are the same.
Based on data from a car bumper sticker study, when a car is randomly selected, the number of bumber stickers and corresponding probabilities are shown below.
Does this data indicate that the sentiment for increasing the speed limit is different for the two groups of residents? Let p1 refer to the urban population.
Suppose researchers have just discovered a new version of a diagnostic blood test. Data from 100 subjects were collected. Sixty of the subjects were known healthy patients and 40 had liver disease. The test results are given below.
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