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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 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: The sampling distribution of sample proportion is approximately normal with mean= p sd=
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=
Confidence interval for a population proportion/mean • When sample size n is large, an approximate level C confidence interval for p : • Confidence interval for :