Find Margin Of Error Given Confidence Interval Calculator
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find the margin of
Find Margin Of Error Calculator
error and the sample mean: (0.256,0.380) a.The margin of error excel margin of error is: _____ b.The sample mea is: _____ Log On
How To Find Margin Of Error On Ti 84
Ad: Mathway solves algebra homework problems with step-by-step help! Algebra: Probability and statisticsSection SolversSolvers LessonsLessons Answers archiveAnswers Immediate margin of error calculator without population size math help from PAID TUTORS. (paid link) 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 margin of error definition sample mea is: _____ Answer by jim_thompson5910(34025) (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 Sample Size
Forms Mobile Intelligence Plans & Pricing Margin of Error Calculator Can you rely on http://www.algebra.com/algebra/homework/Probability-and-statistics/Probability-and-statistics.faq.question.584875.html your survey results? By calculating your margin of error (also known as a confidence interval), you can tell how much the opinions and behavior of the sample you survey is https://www.surveymonkey.com/mp/margin-of-error-calculator/ likely to deviate from the total population. This margin of error calculator makes it simple. Calculate Your Margin of Error: The total number of people whose opinion or behavior your sample will represent. Population Size: The probability that your sample accurately reflects the attitudes of your population. The industry standard is 95%. Confidence Level (%): 8085909599 The number of people who took your survey. Sample Size: Margin of Error (%) -- *This margin of error calculator uses a normal distribution (50%) to calculate your optimum margin of error.
Size = 9 - 1Interval Size = 8Calculate the margin of margin of error error:Margin of Error=±Interval Size2Margin of Error=±82Margin of Error = ±4Calculate sample mean:The sample mean is just the midpoint of the confidence intervalSample Mean x=Interval Size2Sample Mean x=9 + 12Sample Mean x=102Sample Mean x = 5 Email: don@mathcelebrity.com Tel: (708) 926-4171 MembershipExam CertificationsHomework HelpFree Traffic Secrets CourseSubjectsPrivacy Policy
Products Editions Modules Online Backup Price/Ordering International Distributors Services Web Survey Hosting Training Workshop Data Processing Downloads Survey Templates Update Version 11.0 Update Version 10.5 Update Version 10.0 Update Version 9.5 Update Version 9.0 Update Version 8.1 Research Aids Sample Size Calculator Sample Size Formula Significance Survey Design Correlation Contact Us Free Quote Blog Get Your Free Consultation! Sample Size Calculator This Sample Size Calculator is presented as a public service of Creative Research Systems survey software. You can use it to determine how many people you need to interview in order to get results that reflect the target population as precisely as needed. You can also find the level of precision you have in an existing sample. Before using the sample size calculator, there are two terms that you need to know. These are: confidence interval and confidence level. If you are not familiar with these terms, click here. To learn more about the factors that affect the size of confidence intervals, click here. Enter your choices in a calculator below to find the sample size you need or the confidence interval you have. Leave the Population box blank, if the population is very large or unknown. Determine Sample Size Confidence Level: 95% 99% Confidence Interval: Population: Sample size needed: Find Confidence Interval Confidence Level: 95% 99% Sample Size: Population: Percentage: Confidence Interval: Sample Size Calculator Terms: Confidence Interval & Confidence Level The confidence interval (also called margin of error) is the plus-or-minus figure usually reported in newspaper or television opinion poll results. For example, if you use a confidence interval of 4 and 47% percent of your sample picks an answer you can be "sure" that if you had asked the question of the entire relevant population between 43% (47-4) and 51% (47+4) would have picked that answer. The confidence level tells you how sure you can