Confidence Interval To Find The Estimated Margin Of Error
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Use The Confidence Interval To Find The Estimated Margin Of Error Calculator
margin of error and the sample mean: (0.256,0.380) confidence interval to find margin of error and sample mean a.The margin of error is: _____ b.The sample mea is: _____ use the given confidence interval to find the margin of error and the sample mean Log On Ad: Mathway solves algebra homework problems with step-by-step help! Algebra: Probability and statisticsSection SolversSolvers LessonsLessons Answers archiveAnswers
Use The Confidence Interval To Find The Margin Of Error And The Sample Mean (12 20)
Click here to see ALL problems on Probability-and-statistics Question 584875: Use the confidence interval to find the margin of error and the sample mean: (0.256,0.380) a.The margin of error is: _____ b.The sample mea is: _____
Margin Of Error Formula
Answer by jim_thompson5910(34015) (Show Source): You can put this solution on YOUR website! a) The margin of error is equal to the radius of the confidence interval or half the width of the confidence interval. Margin of Error: ME = (b-a)/2, where the confidence interval is (a,b) ME = (0.380-0.256)/2 ME = 0.062 So the margin of error is 0.062 ------------------------------------------------------- b) The sample mean is the center of the confidence interval. Note: this is assuming that this is a confidence interval for the true population mean. Sample Mean: xbar = (a+b)/2, for some confidence interval (a,b) xbar = (0.256 + 0.380)/2 xbar = 0.318 So the sample mean is 0.318
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Margin Of Error Confidence Interval Formula
Permutation Calculator / Combination Calculator Interquartile Range Calculator Linear Regression Calculator Expected Value Calculator Binomial Distribution Calculator Statistics Blog Calculus Matrices use the given confidence interval to find the margin of error calculator Practically Cheating Statistics Handbook Navigation How to Calculate Margin of Error in Easy Steps Probability and Statistics > Critical Values, Z-Tables & Hypothesis Testing > How to Calculate Margin of Error Contents (click to skip http://www.algebra.com/algebra/homework/Probability-and-statistics/Probability-and-statistics.faq.question.584875.html to that section): What is a Margin of Error? How to Calculate Margin of Error (video) What is a Margin of Error? The margin of error is the range of values below and above the sample statistic in a confidence interval. The confidence interval is a way to show what the uncertainty is with a certain statistic (i.e. from a poll or survey). For example, a poll might state that there http://www.statisticshowto.com/how-to-calculate-margin-of-error/ is a 98% confidence interval of 4.88 and 5.26. That means if the poll is repeated using the same techniques, 98% of the time the true population parameter (parameter vs. statistic) will fall within the interval estimates (i.e. 4.88 and 5.26) 98% of the time. What is a Margin of Error Percentage? A margin of error tells you how many percentage points your results will differ from the real population value. For example, a 95% confidence interval with a 4 percent margin of error means that your statistic will be within 4 percentage points of the real population value 95% of the time. The Margin of Error can be calculated in two ways: Margin of error = Critical value x Standard deviation Margin of error = Critical value x Standard error of the statistic Statistics Aren't Always Right! The idea behind confidence levels and margins of error is that any survey or poll will differ from the true population by a certain amount. However, confidence intervals and margins of error reflect the fact that there is room for error, so although 95% or 98% confidence with a 2 percent Margin of Error might sound like a very good statistic, room for error is built in, which means sometimes statistics a
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