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An experiment consists of four outcomes with P(E1) = 0.2， P(E2) = 0.3， and P(E3) = 0.4. The probability of outcome E4 is 答案: 0.100

An experiment consists of four outcomes with P(E1) = 0.2， P(E2) = 0.3， and P(E3) = 0.4. The probability of outcome E4 is

答案: 0.100

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The set of all possible sample points (experimental outcomes) is called

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Chapter 5 Survey Sampling quizzes5

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A population has a standard deviation of 16. If a sample of size 64 is selected from this population， what is the probability that the sample mean will be within ±2 of the population mean?

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Conclusions drawn from a sample survey apply to any population.

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