Sampling_Distribution_(continued)

# Sampling_Distribution_(continued) - Checkpoint 3 Modeling...

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Checkpoint 3 - Modeling and Inference Sampling Distribution of the Sample Proportion Sampling Distribution of the Sample Proportion (continued) February 24, 2014 Sampling Distribution of the Sample Proportion (continued

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Checkpoint 3 - Modeling and Inference Sampling Distribution of the Sample Proportion Checkpoint 3 - Modeling and Inference Requirements Go to CCLE Confidence Interval and Hypothesis Testing Both calculation and visualization (using StatKey) Sampling Distribution of the Sample Proportion (continued
Checkpoint 3 - Modeling and Inference Sampling Distribution of the Sample Proportion Review - Parameter or Statistics A politician believes that he will get 60% of the vote. A survey of 1000 likely voters shows 58% are voting for him? Which of these number is a parameter? A. 58% B. 60% C. 1000 Sampling Distribution of the Sample Proportion (continued

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Checkpoint 3 - Modeling and Inference Sampling Distribution of the Sample Proportion Parameter or Statistics A politician believes that he will get 60% of the vote. A survey of 1000 likely voters shows 58% are voting for him? Which of these number is a parameter? A. 58% B. 60% C. 1000 Sampling Distribution of the Sample Proportion (continued
Checkpoint 3 - Modeling and Inference Sampling Distribution of the Sample Proportion Identify the sampling distribution based on n = 10 Sampling Distribution of the Sample Proportion (continued

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Checkpoint 3 - Modeling and Inference Sampling Distribution of the Sample Proportion Identify the sampling distribution based on n = 10 D. Sampling Distribution of the Sample Proportion (continued
Checkpoint 3 - Modeling and Inference Sampling Distribution of the Sample Proportion Identify the sampling distribution based on n = 1000 C. Sampling Distribution of the Sample Proportion (continued

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Checkpoint 3 - Modeling and Inference Sampling Distribution of the Sample Proportion Identify the sampling distribution based on n = 1000 C. Sampling Distribution of the Sample Proportion (continued
Checkpoint 3 - Modeling and Inference Sampling Distribution of the Sample Proportion Sampling Distribution of the Sample Proportion Example: Ask 100 people randomly if they would voted for Mitt Romney. The answers could be Yes or No. The Estimated sample proportion is: ˆ p = number of successes n Sampling Distribution of ˆ p is approximately normal with mean equal to the population mean, p , and the standard deviation is approximate the population standard deviation q p ( 1 - p ) n . Sampling Distribution of the Sample Proportion (continued

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Checkpoint 3 - Modeling and Inference Sampling Distribution of the Sample Proportion Sample Proportions 1 Notation 1 Sample size = n 2 Sample proportion = ˆ p 3 Population size: N 4 Population proportion = p (usually unknown) μ p ) = p and σ p ) = q p ( 1 - p ) n , where p is the true but unknown population proportion.
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