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12-12-2022
Mathematics

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A sample of size n will be selected from a population with population proportion p. Which of the following must be true for the sampling distribution of the sample proportion to be approximately normal? Both np and n(1 – p) are at least 10. n is greater than 30. pis greater than 0.5. D The mean is equal to np. E The variance is equal to np(1 – p).

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