PPT-Section 6.9 Test for a Difference in Proportions

Outline Pooled proportion Test for a difference in proportions Split or Steal   http wwwyoutubecomwatchvp3Uos2fzIJ0 Both choose split split the jackpot Both choose steal both get nothing. . To test claims about inferences for two proportions, under specific conditions. 8.4: two-proportion inference tests. Proportions observed in independent random samples . are. independent. Thus, we can add their variances. So…. To Accompany. Business Statistics: A Decision Making Approach, . 8th . Ed.. Chapter 10:. Estimation and Hypothesis Testing for Two Population Parameters. By. Groebner, Shannon, Fry, & Smith. Prentice-Hall Publishing Company. . Pythagoras (560-480 BC), the Greek geometer, was especially interested in the golden section, and proved that it was the basis for the proportions of the human figure. He showed that the human body is built with each part in a definite golden proportion to all the other parts.. Statistics. What you will learn. Be able to state the null and alternative hypotheses for testing the difference between two population proportions.. Know how to examine your data for violations of conditions that would make inference about the difference between the two population proportions unwise or invalid.. Ratios. Comparison of two items/objects. Written one of 3 ways. As a fraction. With : (colon). . using word “to”. When writing a ratio. First thing you talk about is the numerator. Second thing you talk about is the denominator. A Conceptual Overview. Sixth Edition. PowerPoints by Pamela Pitman Brown, PhD, CPG. Fred Pyrczak. Pyrczak Publishing. Part D: Inferential Statistics. VARIATIONS ON. RANDOM SAMPLING. Section 17. Population. University. .. .. .. .. .. .. .. .. .. .. .. SLIDES. . .. . BY. Chapter 12. . Comparing Multiple Proportions,. Test of Independence and . Goodness of . Fit. . Testing the Equality of Population Proportions. two-proportion inference tests. Chapter 22. Proportions observed in independent random samples . are. independent. Thus, we can add their variances. So…. The standard deviation of the difference between two sample proportions is . A Conceptual Overview. Sixth Edition. PowerPoints by Pamela Pitman Brown, PhD, CPG. Fred Pyrczak. Pyrczak Publishing. Part D: Inferential Statistics. VARIATIONS ON. RANDOM SAMPLING. Section 17. Population. Difference Between Proportions. Sometimes we want to see if there is a significant difference between independent groups.. Control group vs. treatment group or placebo group. Men vs. women. Last year vs. this year. This would involve the percent of difference between two groups.. For example, you want to determine the difference in success rates between students from high-income families, versus students with low-income families.. 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 Gajewski. Craig . Wocl. Article. Purpose: attempt to quantify the process that is used to build winning baseball teams. Recognizing talent: minor league performance. Developing talent: years in minor leagues. Example: . Suppose you wanted to test the drug that may affect IQ, but this time you look for changes within each subject. This is done by measuring the IQ for each subject before and after taking the drug. For 9 subjects, you might get a result like this: .