Techniques of Hypothesis Testing Dr. Scott Stevens Objectives When you finish reading this article‚ you should be able to • Determine the appropriate null and alternate hypotheses for your hypothesis test • Determine if your test is one- or two- tailed • Conduct an appropriate test using Excel in any of three ways o Using the critical score approach o Using the non-rejection region approach (for a two-tailed test) o Using the P-value approach
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five steps of hypothesis testing and the 5% significance level (i.e. alpha = .05)‚ does showing the film change students’ attitudes towards the chronically mentally ill? What does it mean to set alpha at .05? Alpha means making a Type I error same as significance level. When the alpha is at .05 it means that the researcher doesn’t want to take a big risk therefore sets the alpha to .05. By doing this it will make it hard for hypothesis testing process to reject the null hypothesis unless it is
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MATH 2050 Project Guidelines Your grade will be determined by the paper you hand in and the presentation you give. Your population of interest will be all MTSU students. For the simplicity’s sake‚ we will use our class as our “random” sample. Your tasks: Data Collection: • Determine 4 to 6 variables (at least 2 quantitative and 2 qualitative) you would like to collect information on from the sample. • Write a survey that asks clear questions that will allow you to collect your data
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A NOTE ON HYPOTHESIS TESTING |Significance Level |One-Sided Test |Two-Sided Test | |0.10 |1.285 |1.645 | |0.05 |1.645 |1.960 | |0.01 |2.33 |2.575 | Part A. Single-Sample
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Axia College Material Appendix B Tips for Creating a PowerPoint® Presentation Your Week Three assignment requires you to use the Microsoft® PowerPoint® graphics presentation program. This lecture provides you with the very basics for starting up with the program. Getting Started • Open the Microsoft® PowerPoint® program. • Start a new presentation: Click on Blank Presentation and then click OK. • Choosing a slide layout: Click on Format and then click Slide Layout.
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How to Prepare a PowerPoint Presentation INSTRUCTIONS 1 Launch PowerPoint on your computer. You will see a blank PowerPoint slide with text placeholders. 2 Click the "Designs" tab to browse the template themes. 3 Click the theme you would like to apply to your PowerPoint presentation. This will change the design for all slides you create. 4 Click inside the text placeholders and type your text. The first slide should include the presentation’s title and any important information.
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1. (12 points) In this recession‚ yours truly would like to make extra money to support his frequent filet-mignon-et-double-lobster-tail dinner habit. A promising enterprise is to mass-produce garnet wedding rings for brides. Based on my diligent research‚ I have found out that women’s ring size normally distributed with a mean of 6.0‚ and a standard deviation of 1.0. I am going to order 5000 garnet wedding rings from my reliable Siberian source. They will manufacture ring size from 4.0‚ 4
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Hypothesis testing begins with the assumption that randomization is used to collect quantitative data about the sample and that the distribution of this data has a normal shape. Significance tests state two explanations‚ or hypotheses‚ about a parameter. One‚ called the null hypothesis‚ states that the parameter equals some value (usually 0). The other‚ called the alternative hypothesis‚ states that the parameter is greater than‚ less than or (not) equal to the value stated in the null hypothesis
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steps of hypothesis testing and the 5% significance level (i.e. alpha = .05)‚ does showing the film change students’ attitudes towards the chronically mentally ill? • What does it mean to set alpha at .05? Alpha at .05 means there is a .05 probability or 5% chance of committing a Type I error‚ which means that we have rejected our null hypothesis and found support for our alternate hypothesis when‚ in fact‚ the null hypothesis was true. • What is your null hypothesis? Alternate hypothesis? Ho :
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Hypothesis Test Analysis Shawnda Peluaga Research and Evaluation October 30‚ 2006 Business Problem You are the manager of a large firm. Lately complaints have surfaced that an increased number of incoming calls are being dropped or misrouted. Yesterday‚ as you walked by one older employee‚ you noticed that he was fiddling with his hearing aid and not paying attention to the phone. A call came in and only because you were there and intervened was the call answered. This particular phone
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