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The Polya urn model for contagion is as follows: We start with an urn which contains one white ball and one black ball. At each second we choose a ball at random from the urn and replace this ball and add one more of the color chosen. Write a program to simulate this model, and see if you can make any predictions about the proportion of white balls in the urn after a large number of draws. Is there a tendency to have a large fraction of balls of the same color in the long run?
A promotion campaign is being planned to encourage people to reduce heat in their houses at night. In order to measure the campaign's impact, we want to determine the proportion of people who reduce their heat at night.
in one area of an orchard there are 17 trees of which 10 are busy and 7 are lean. if 4 trees are randomly selected for
Provide a descriptive analysis of the two variables (e.g., mean, standard deviation, minimum and maximum).
You are asked by the owner of the Starshine Motel to develop a customer satisfaction survey to determine the percentage of customers who are dissatisfied with service.
A teacher claims that the variance on a calculus test is 68. A sample of 28 students had a standard deviation of 5.8. Test the teacher's claim at the 0.05 level of significance.
1. the length of time in minutes required to complete a series of physical therapy exercises is normally distributed
5-year treasury bonds yield 5.5. the inflation premium ip is 1.9 and the maturity risk premium mrp on 5-year bonds is
X2 is college board score (range 200-800). Use the multiple regression equation to predict college gpa for a high school gpa of 3.6 and a college board score of 600.
Write a statement that interprets the confidence interval. Based on the preceding result, should pollsters be concerned about results from surveys conducted by telephone?
A doctor wants to estimate the HDL. How many subjects are needed to estimate the HDL within 3 points with a 99% confidence. Assuming s=13.9
timber yield is approximately equal to the volume of a tree however this value is difficult to measure without first
Study About The Current Parking Policy Opposed by Nurses
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