Sampling distribution proportion calculator
[DOC File]Rossman/Chance
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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 .
[DOC File]Topic 18: The Central Limit Theorem
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The proportion of smokers among adult residents of Kentucky in 1998 was 0.308. Treat this as the population proportion, and suppose that you take a random sample of 400 Kentucky residents. Draw a sketch of the sampling distribution of the sample proportion of smokers. Show the locations for 1 and 2 standard deviations from the mean.
[DOC File]The Practice of Statistics
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one-proportion z-interval Calculator Skills: 1-PropZInt Describe the sampling distribution model of . What assumptions must you make for this description to be reasonable? ... What assumptions and conditions must you consider before creating a confidence interval for a proportion? What effect does increasing your sample size have on the margin ...
[DOC File]Topic 162: Sampling Distributions I: Proportions (Day Two)
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On your calculator create a histogram of List 2with x-scale of .02. Describe shape, center, and spread of the histogram above. The patterned displayed by the variation of the sample proportion is called the . sampling distribution . of the sample proportion.
[DOC File]Sampling Distribution and Confidence Interval Problems
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Sampling Distribution and Confidence Interval Problems Author: wsu Last modified by: WSU Created Date: 10/2/2007 9:49:00 PM Company: wsu Other titles: Sampling Distribution …
[DOC File]Exam 3 Practice Questions
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B Use the sampling distribution of the sample proportion that you used above and the z-score. Look up 1.00 in the table. 0.8413 is listed in the table. This is the proportion less than, we want the proportion greater than so we take 1-0.8413=0.1587.
[DOC File]Test 9C - Mrs. Davis' AP Stat Page
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The sampling distribution of the proportion of damaged trees is approximately Normal If we took another random sample of trees, we would find that 40% of these would show some signs of damage If a sample of 1000 trees was examined, the variability of the sample proportion would be larger than in a sample of 100 trees
[DOC File]Thursday, February 3:
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Let be the difference in the sample proportion of cars made by American manufacturers. (a) What is the shape of the sampling distribution of ? Why? (b) Find the mean of the sampling distribution. Show your work. (c) Find the standard deviation of the sampling distribution. Show your work.
[DOCX File]University of Arizona
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Sampling Distribution of a Sample Proportion. If . X is the number of successes in n trials, then X . has a binomial distribution. provided that the population is much larger than . n . so that the number of successes in successive trials are independent. The population needs to be 10 times larger than the sample size. However, the proportion
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