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One-sixth of the male freshmen entering a large state school are out-of-state students. If the students are assigned at random to the dormitories, 180 to a building, what is the probability that in a given dormitory at least one-fifth of the students are from out of state?
Then turn up cards from the top until the first ace appears. What is the expected value of the number of cards required to produce the first ace?
Find the pdf of X+Y - Two independent uniform random variables
Assume X is an exponential random variable with parameter lambda. Find the method of moments estimator for lambda.
uppose that the protion of all invoices that were paid late is 20 percent. In a random sample of 140 invoices, determine the probability that more than 28 percent invoices were paid late.
How large a sample is needed to estimate the true proportion of home owners who have vegetable gardens to within 0.04 with 98% confidence?
The world's smallest mammal is the bumblebee bat. Shown to the right are weights(in grams) from a sample of those bats. Use the traditional method and significance level of .05 to test the claim that these bats come from the same population having..
Suppose that you are the director of an insurance adjustment office. Your office has just received 140 insurance claims to be processed in the next few days half or more of the claims have been padded.
using the census data the oh registry of motor vehicles reveal the subsequent about the autos owned by the 10 families
Interpret the y-intercept of the line.
If a group is chosen from a population on the basis of sharing the same percentages of trait features as known to exist in the population, then the group so chosen would constitute:
Average number of mosquitoes in pond is 80 per square meter with a standard deviation of 12. If 16 square meters are choses at random for a mosquiot count, find probabilty that the average of those counts is more than 83.0 mosquitoes per square me..
Approximately normally distributed with σ=10. Determine the probability that a randomly selected chocolate bar will have: 4.3 more than 155 calories.
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