sample standard estimates ‚ population ii. Continuous deviation standard deviation Random Variable estimates P‚ population ˆ p ‚ sample Sampling Distributions proportion proportion Parameter (Defines a population) Statistic (calculated from sample to estimate a parameter) Central Limit Theorem Law of Large Numbers Confidence Level (1- )*100 Type I error (rejecting the null hypothesis when in fact it is true) Type II error (not rejecting the null hypothesis when in fact the null
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harvard A Newsletter from Harvard Business School Publishing management update ARTICLE REPRINT NO. U0603C The Use and Misuse of Statistics For a complete list of Harvard Business School Publishing newsletters: http://newsletters.harvardbusinessonline.org For reprint and subscription information for Harvard Management Update: Call 800-988-0866 or 617-783-7500 http://hmu.harvardbusinessonline.org For customized and quantity orders of reprints: Call 617-783-7626 Fax 617-783-7658
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2 0 1 3 Sp e c i a l R e p o r t o n Paddlesports K aya k i n g | C a n o e i n g | R a f t i n g | S ta n d u p pa d d l i n g A Partnership Project of: Paddlesports offer opportunities to get a unique view of the American landscape while enjoying the outdoors. Whether rafting down a river‚ kayaking in the ocean‚ stand up paddling on a lake or canoeing through a stream‚ millions of Americans enjoyed paddlesports in 2012. In fact‚ more than six percent of Americans participated in paddling —
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normality d. probability ANSWER: c 6. A type II error occurs when: a. the null hypothesis is incorrectly accepted when it is false b. the null hypothesis is incorrectly rejected when it is true c. the sample mean differs from the population mean d. the test is biased ANSWER: a 7. Of type I and type II error‚ which is traditionally regarded as more serious? a. Type I b. Type II c. They are equally serious d. Neither is serious ANSWER:
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conjugate acid of each of the following: HSO3–‚ F– ‚ PO43–‚ CO. Answers: H2SO3‚ HF‚ HPO42–‚ HCO+ Chemistry: The Central Science‚ Eleventh Edition By Theodore E. Brown‚ H. Eugene LeMay‚ Bruce E. Bursten‚ and Catherine J. Murphy With contributions from Patrick Woodward Copyright ©2009 by Pearson Education‚ Inc. Upper Saddle River‚ New Jersey 07458 All rights reserved. Sample Exercise 16.2 Writing Equations for Proton-Transfer Reactions The hydrogen sulfite ion (HSO3–) is amphiprotic. (a)
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female manager = 74.8/18 = 4.16 Conclusion female managers have a higher mean than male managers but no other conclusion can come from the mean. Data from the males 4‚ 4.6‚ 3.2‚ 3.9‚ 4.2‚ 3.7‚ 4.1‚ 4.5‚ 3.5‚ 4‚ 3.9‚ 4‚ 3‚ 4.5‚ 4.9‚ 3‚ 3.3‚ 3 Ordered Values – 3‚ 3‚ 3‚ 3.2‚ 3.3‚ 3.5‚ 3.7‚ 3.9‚ 3.9‚ 4‚ 4‚ 4‚ 4.1‚ 4.2‚ 4.5‚ 4.5‚ 4.6‚ 4.9 Median – 3.95 Data from the females 4.2‚ 4.1‚ 4.2‚ 4.6‚ 3.9‚ 4.1‚ 4.7‚ 4.1‚ 4.2‚ 4‚ 4.2‚ 4.1‚ 4‚ 4.5‚ 4.3‚ 3.9‚ 4‚ 3.7 Ordered Values – 3.7
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average + (SD x standard units). Standard units are denoted by Z. Chapter 8 Complement rule: P(A) = 1 – P(A doesn ’t happen) Multiplication rule: P(A and B both happen) = P(A) x P(B given A happened) Q. 5 random components removed one at a time from box containing 5 defective and twenty working. What is chance of selecting all defective: A. 5/25x4/24x3/23x2/22x1/21. Selecting no defective 1 minus chance of selecting all defective or 20/25 x 19/24 x 18/23 x 17/22 x 16/21 = 2/7 or 29% Q. Important
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Accounting 381 Reading Assignment 1: Accounting and Professionalism Due: Tuesday‚ January 12‚ 2010 (at beginning of class). Please be prepared to discuss the questions and your responses in class on this date. Required: Answer the following questions based on your examination of the readings listed below. This should be completed on an individual basis. Your discussion should be no more than 2 pages in length‚ single-spaced. You do not need to use a particular format to prepare your
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understanding reading and writing connections‚ one must begin to view reading and writing as essentially similar processes of meaning construction. Both are acts of composing. (Tierney &Pearson‚ 1983‚ p.568) 1983------- Writing: active skill Reading: passive skill Major constructions of reading-writing connections 1.Stotsky(1983) focused on three themes of research : a-correlational studies b-studies examining the influence of writing on reading c- Studies examining
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Convos/STAT 113 Service Learning Group Project Instructions 30 points total Josey Ho 0027899115 Peining Xie 0025880900 Xiaotian Zhang 0025741134 Start by watching the Convos video (link will be in Blackboard) to learn what Convos needs for us to do to help them choose artists to bring to campus next semester. We will all be working as statistical consultants. You will be working in groups to collect data‚ and then as a class we will prepare a report for Convos. Questions to answer with your group before collecting your data:
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