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In the eelpout (Zoarcesviviparus), a population found near a pulp mill in Sweden exhibited a biased male sex ratio. If the sex ratio is 135 males: 100 females, and we sample 8 fish at random from the population, what are the probabilities of obtaining 0 males, 1 male, 2 males, and so on, up to 8 males? What is the expected value for this distribution? What is the expected variance for this distribution?
A firm engaged in manufacturing undergarments for gents employs 100 male and 144 female workers. The average production per day of a male worker is 60 items with a variance of 15 items, and that of a female workers is 65 items with a variance of 1..
What are the minimum and the maximum starting salaries of the middle 95% of the LU graduates?
The dimension is supposed to be 224 mm and the variance is unknown for the manufacturing process. Is there evidence that the mean dimension is not 221 mm? Assume the population is normally distributed. Use a = 0.05 and the critical value value met..
assume that there are 400 undergraduates in the college of business. 35 students are taking a data mining class and 300
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consider a virus that is spread by transfusions of blood contaminated by the virus a person receiving contaminated
Give a 99% confidence interval for the mean number of years general managers of major-chain hotels have spent with their current company.
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a sample of 65 observations is selected from one population with a population standard deviation of .75. the sample
scientists at the hopkins memorial forest in western massachusetts have been collecting meteorological and environ-
a company has 1300 items. in a sample of 120 items the historical cost of each item was compared with the audited value
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