Units of the true mean
We want to estimate mean population. A random sample of subjects is selected and sample mean is computed. Determine the probability that the sample mean is in three units of the true mean if the standard error is 1.8?
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Suppose that 76% of Americans prefer Coke to Pepsi. A sample of 80 was taken. What is the probability that at least seventy percent of the sample prefers Coke to Pepsi?
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State the following as the sum, difference, or multiple of logarithms. Part of logarithm may be find out exactly. log(2) 40. ie log base 2 40.
Find the mean and standard error of the x distribution. Find p(x>67.75)
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