PPT-For the same confidence level, narrower confidence interval

Sample size and experimental design You may need a certain margin of error eg drug trial manufacturing specs In many cases the population standard deviation s is fixed but we can choose the number of measurements . Recitation 13. (11/27/2012). TA: Zhen . (Alan) . Zhang. zhangz19@stt.msu.edu. Office hour: (C500 WH) 1:45 – 2:45PM . Tuesday. (office . tel.: . 432-3342). Help-room: (A102 WH) 11:20AM-12:30PM, . Monday, Friday. Confidence Intervals. Important. Easy to Difficult. Warning: some mathematical content. Contents. Summarized data. Confidence Intervals. Independence Assumption. Prediction Intervals. Which Summarization to Use ? . Recitation 12. (4/2/2013). TA: Zhen Zhang. zhangz19@stt.msu.edu. Office hour: (C500 WH) 3-4 PM Tuesday. (. office . tel.: . 432-3342). Help-room: (A102 WH) . 9:00AM-1:00PM. , . Monday. Class meet on Tuesday: . Confidence Intervals. (application of the Central Limit Theorem). Sections 5.1, 5.2. Introduction and Confidence Intervals for Proportions. Lecture Unit 5 Objectives. Construct . confidence intervals. GrowingKnowing.com © 2011. 1. GrowingKnowing.com © 2011. Estimates. We are often asked to predict the future!. When will you complete your team project?. When will you make your first million dollars?. Unit 4 – Inference from Data: Principles. Topic 16 . Confidence Intervals: Proportion. Topic 16 - Confidence Interval: Proportion. The estimated standard deviation of the sample . statistic pˆ is called the . 16. . Thursday. , October . 13, . 2016. Textbook: Sections . 9.3, 9.4. , 10.1, 10.2. • Define standard error, relate it to both standard deviation and sampling distribution ideas.. • . Describe the sampling distribution of a sample proportion. GrowingKnowing.com © 2011. 1. GrowingKnowing.com © 2011. Estimates. We are often asked to predict the future!. When will you complete your team project?. When will you make your first million dollars?. Population . Proportion. Objective. : . To estimate population proportions under specific conditions with various confidence levels. Warm-Up: Estimating Population Means. A coffee machine dispenses coffee into paper cups. You’re supposed to get 10 ounces of coffee, but the amount varies slightly from cup to cup. Here are the amounts measured in a random sample of 20 cups. Find a 95% confidence interval based off of these sample data to capture the true mean. Is the true mean actually captured in your interval?. John Krickl. Glenbrook North High School. Northbrook, IL. jkrickl@glenbrook225.org. DUALITY STICKS. Motivation. “. Using the same sample, a two-tailed hypothesis test with significance level α will . La gamme de thé MORPHEE vise toute générations recherchant le sommeil paisible tant désiré et non procuré par tout types de médicaments. Essentiellement composé de feuille de morphine, ce thé vous assurera d’un rétablissement digne d’un voyage sur . Chapter 8: Inference for Proportions Lecture Presentation Slides Macmillan Learning © 2017 Chapter 8 Inference for Proportions 8.1 Inference for a Single Proportion 8.2 Comparing Two Proportions MATH 2311 Section 7.4 Confidence Interval for a Population Mean So, what is t* ? How do we find critical values for a t -distribution? Look at the online text book, under appendices. Degrees of freedom are on the left and the top end (1-confidence level/2) are given at the top. Special Topics. A 95% Confidence Interval. Now, in plain English…. What this is saying is that a 95% confidence interval is an interval created to estimate what (where) the true parameter might be..