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Peer Review for Exam 2

Peer Review for Exam 2. TA: Dongmei Li. Review of concepts. Sampling distribution Confidence interval. Sampling distribution of sample proportion. Choose an SRS of size n from a population that contains proportion p of successes. If the sample size n is large:

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Peer Review for Exam 2

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  1. Peer Review for Exam 2 TA: Dongmei Li

  2. Review of concepts Sampling distribution Confidence interval

  3. Sampling distribution of sample proportion • Choose an SRS of size n from a population that contains proportion p of successes. • If the sample size n is large: The sampling distribution of sample proportion is approximately normal with mean= p sd=

  4. Sampling distribution of a sample mean • Choose an SRS of size n from a population with mean and standard deviation . • When sample size n is large: The sampling distribution of sample mean is approximately normal with mean= sd=

  5. Confidence interval for a population proportion/mean • When sample size n is large, an approximate level C confidence interval for p : • Confidence interval for :

  6. Critical values of the normal distributions

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