Find the mean and variance of x
In a survey, 80% of the voters support a particular referendum. If 20 voters are chosen at random, and X is the number of voters that support this referendum, find the mean and variance of X.
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what is the appropriate procedure to test for significant difference in means between two groups? Implement the procedure using the critical-value method and what is the p-value?
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A criticism of the argument that trade has been an important cause of increased U.S. wage inequality in recent decades is that, if trade were an important cause, the nontraded goods industries would have responded to the _____ in the price of skil
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