Standard error sample proportion calculator
[DOC File]The Practice of Statistics
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Explain how the behavior of the sample mean and standard deviation are similar to the sample proportion. The mean and standard deviation of a population are parameters. What symbols are used to represent these parameters? The mean and standard deviation of a sample are statistics. What symbols are used to represent these statistics?
[DOC File]The Practice of Statistics
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Key Vocabulary: standard error. confidence level. confidence interval. margin of error. critical value. one-proportion z-interval Calculator Skills: 1-PropZInt
[DOC File]AP Stats Chapter 10: Estimating with Confidence
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What proportion of US adults are unemployed right now? What proportion of teenagers have a computer with internet access in their bedroom? What proportion of college students pray on a daily basis? What proportion of preteens have a cell phone? What proportion of Californians approve of President Bush’s handling of the situation in Iraq?
[DOC File]Exam 3 Practice Questions
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b) the standard deviation of the sample mean is the same as the standard deviation from the original population c) the mean of the sampling distribution of is the …
[DOC File]AP Stats Chapter 10: Estimating with Confidence
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As the sample size n grows, the sample standard deviation sx will be an accurate estimate of whether or not the population has a Normal distribution. Always make a plot to check for skewness and outliers before you use the t procedures for small samples.
[DOC File]STAT 211
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Estimate the true proportion of all such students who own a calculator that does not use reverse Polish logic. Answer=0.80 Example 3 (Exercise 6.8) : In a random sample of 80 components of a certain type, 12 are found to be defective.
[DOC File]Thursday, February 3:
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What is the pooled (combined) sample proportion? Why do we pool the sample proportions? Highlight two-way table for example in book and make for subsequent examples. List all three standard deviations/standard errors: If we know the true proportions: If we only have phats: If we only have phats and must assume p1 = p2: What is the test ...
[DOC File]Thursday, January 13: Chapter 7 Review
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8.2 486 4 Determine critical values for calculating a C% confidence interval for a population proportion using a table or technology. 8.2 488 2 Construct and interpret a confidence interval for a population proportion. 8.2 489, 491 4 Determine the sample size required to obtain a C% confidence interval for a population proportion with a ...
[DOC File]Rossman/Chance
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Central Limit Theorem (CLT) for Sample Proportion: Suppose that the proportion of a large population having some characteristic is denoted by , and suppose that a random sample of size n is taken from the population. Then the sampling distribution of the sample proportion is approximately normal with mean and standard deviation .
[DOCX File]ES - Home
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Section 8.2 - Estimating a Population Proportion (pp.492-507) You guessed it, back to the Hyena Experiment. Suppose on the first day of the semester, your team chose one SRS of size 20 from the bag in order to determine a point estimate . p . for the population proportion p. of male hyenas in the Croatan NF. You found 16 male hyenas. Point ...
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