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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?
What is meant by Econometrics , Regression analysis and Disturbance or error term?
You are tracking the sales of three tires. Using the binomial distribution formula, what is the probability that at least one will need a repair?
a researcher concerned about the foreign ownership of the retail trade industry in the u.s. conducts a survey of
What is the probability that a randomly-selected truck travels between 30 and 60 thousand kilometres in one year. Standard deviation of 12.0 thousand kilometres.
Calculate the p- value and use it to test H0 versus H a at each of a .10, .05, .01, and .001. d How much evidence is there that the mean composite satisfaction rating exceeds 42?
1 at what age do babies learn to crawl? does it take longer to learn in the winter when babies are often bundled in
Assign probabilities to the sample points and then find the probability that the first envelope purchased contains less than $100.
Does the variability in output appear to differ at the two experience levels? Test the hypotheses at the .05 significance level.
a professor gives tests that are either hard medium or easy. if she gives a hard test her next test will be either
25% of the residents garden. If 5% of the residents play poker and garden, find the probability that a resident plays poker, given that they also garden.
Construct a 95% confidence interval for the difference in the proportions of women and men who have regular exercise programs.
a firm assumes that idle time of workers in construction projects is 72 minutes give or take 20 minutes. a random
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