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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?
Find a 95% confidence interval for the true proportion of patients who experienced cotton mouth. Show your calculations and/or explain the process used to obtain the interval.
Find a 90% confidence interval for the population mean weight of all such turtles.
The IT manager at a large company has developed the following probability distribution for the number of interruptions per day. What is the expected number of interruptions per day? What is the standard deviation in the number of interrup..
The snowball strikes the ground if it doesn't strike anything else while falling? (b) A man 1.9 m tall is standing 4 m from the edge of the barn. Will the snowball hit him?
coefficient of variation and standard deviation are two measures of dispersion or spread among the data values. lets
an internet retailer stocks a popular electronic toy at a central warehouse that supplies the eastern united states.
What proportion of packages is returned? If someone buys three packages, what is the probability that exactly one of them will be returned?
Using the 0.10 level of significance, is there evidence that the mean shopping time at the local supermarket is different from the claimed value of 22 minutes?
What is the probability of getting an ace or a club on a single pick from a well-shu?ed standard deck of cards?
Make a probability distribution chart using reduced fractions to show the following information: The chart below shows the number of committee members who attended a meeting.
Jim Sellers is thinking about producing a new type of electric razor for men. If the market were favorable, he would get a return of $100,000, but if the market for this new type of razor were unfavorable
The hardness of a piece of ceramic is proportional to the ?ring time. Assume that a rating system has been devised to rate the hardness of a ceramic piece and that this measure of hardness is a random variable that is distributed uniformly between..
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