statistic) f) Conduct a test of hypothesis to determine whether the coefficient of correlation in the population is zero H0:β1=0 Ha:β1≠0 t=β1SE =6.826 p-value for df=9 and t=6.826:0.001 0.0001<0.05 Therefore null hypothesis is rejected Hence coefficient of correlation is zero is rejected Therefore there is significant relationship between number of sales calls and number of units sold. g) Construct and interpret confidence intervals and prediction intervals for the dependent variable
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34:337–347 DOI 10.1007/s10979-009-9192-x ORIGINAL ARTICLE The Effect of Retention Interval on the Confidence–Accuracy Relationship for Eyewitness Identification James Sauer Æ Neil Brewer Æ Tick Zweck Æ Nathan Weber Published online: 22 July 2009 Ó American Psychology-Law Society/Division 41 of the American Psychological Association 2009 Abstract Recent research using a calibration approach indicates that eyewitness confidence assessments obtained immediately after a positive identification decision provide
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Sample sizes and confidence intervals for proportions Chong Chun Wie Ext: 2768 ChongChunWie@imu.edu.my Content • Sampling distribution of sample means (SDSM) • Normality Test • Estimating a population mean: σ known • Estimating a population mean: σ unknown • Standard deviation of proportion • Confidence interval of proportion • Hypothesis testing with proportion Population and Sample Samples Populations Sampling distribution of sample means (SDSM) Sampling distribution • Example – Select
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Statistics for Managers using Microsoft Excel 6th Edition Module 4 Sampling & Confidence Interval Estimation Copyright ©2012 Pearson Education Chap 8-1 Chapter Outline Confidence Intervals for the Population Mean‚ μ when Population Standard Deviation σ is Known when Population Standard Deviation σ is Unknown Confidence Intervals for the Population Proportion‚ p Determining the Required Sample Size Copyright ©2012 Pearson Education Chap 8-2 Introduction Copyright ©2012 Pearson
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Hypotheses Null Hypothesis (H₀) : There is no significant difference between Buddhist and non- Buddhist in their use of nonviolent strategies to solve problems Research Hypothesis (H₁) : There is a significant difference between Buddhist and non- Buddhist in their use of nonviolent strategies to solve problems Technique used The technique used when conducting the research question is t-Test of independence. Reasons for using the technique The reason why t-Test of independence
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Elements of a Test of Hypothesis 1. Null Hypothesis (H0 ) - A statement about the values of population parameters which we accept until proven false. 2. Alternative or Research Hypothesis (Ha )- A statement that contradicts the null hypothesis. It represents researcher’s claim about the population parameters. This will be accepted only when data provides sufficient evidence to establish its truth. 3. Test Statistic - A sample statistic (often a formula) that is used to decide whether to reject H0
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One Sample Hypothesis Test Jeremey Yoppini‚ Mayela Castillo‚ Kristopher Olstad‚ Areli Mejia‚ Heather Smith RES342 December 21‚ 2011 Thomas Allen One Sample Hypothesis Test Earning potential and income of every person is severely different; many factors have a hand in determining the amount of money a person makes and how much his or her earning potential can increase. Some of the factors currently determining the earning potential of people around the United States are; education‚ marital
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A statistical test is a formal technique‚ for arriving at a decision about the reasonableness of a hypothesis‚ based on some probability distribution. The test technique uses the values obtained from sample data to arrive at a probability statement about the hypothesis. But it also uses some assertions about the population from which the sample is drawn. Some of the important assumptions are like: Population is normally distributed Sample drawn is a random sample But in case of Non-parametric
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Corporate governance Corporate governance broadly refers to the mechanisms‚ processes and relations by which corporations are controlled and directed.[1] Governance structures identify the distribution of rights and responsibilities among different participants in the corporation (such as the board of directors‚ managers‚ shareholders‚ creditors‚ auditors‚ regulators‚ and other stakeholders) and includes the rules and procedures for making decisions in corporate affairs. Corporate governance includes
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STA3003 Fall 2012 Assignment 5 (Total Points Possible: 15) Name: Banner ID: Instructions: Use this page as your cover page‚ and attach your groupwork behind your work. Your assignment answers should be in complete and grammatically correct sentences. 1. According to the National Center for Health Statistics (2004)‚ 22.4% of adults are smokers. A
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