MA2611‚ Applied Statistics I Term B‚ 2012 Lab Report 6 Dec. 7‚ 2012 Name: Objectives The purpose of this lab intends to explain the process and impacts of confidence and prediction interval techniques and procedures by learning through online tutorials‚ examples‚ and quizzes. Procedures This lab was conducted in a controlled‚ computer environment with access to SAS software and applications. Instructions for the lab were provided in .pdf form and included
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results could be used by the magazine’s editors to identify topics that would be of interest to readers. Your report should address the follow- ing issues‚ but do not limit your analysis to just these areas. a. Develop appropriate descriptive statistics to summarize the data. b. Develop 95% confidence intervals for the mean age and
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Tutorial Questions for Exploratory Data Analysis – Summary Statistics & Graphs 1. Customers of a particular bank rated the service provided by the bank on a scale of one to ten‚ correct to one decimal point. The bank categorised their customers as either (1) Private Account holders or (2) Business Account holders. The information below summarises customer attitudes towards the quality of service provided by the bank. Use the output to answer the questions below. a) Briefly describe
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Student Lecture Notes 7-1 Business Statistics: A Decision-Making Approach 6th Edition Chapter 7 Estimating Population Values Fundamentals of Business Statistics – Murali Shanker Chap 7-1 Confidence Intervals Content of this chapter Confidence Intervals for the Population Mean‚ μ when Population Standard Deviation σ is Known when Population Standard Deviation σ is Unknown Determining the Required Sample Size Fundamentals of Business Statistics – Murali Shanker Chap 7-2 Fundamentals
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Managerial Functions are universal processes which characterize all group efforts-public or private‚ large scale or small scale. These functions include the organization‚ direction‚ coordination and control of human and technical resources to achieve the desired goals of an organization. (Gregorio‚ 1978) Gregorio‚ Herman C. (1978) School Administration and Supervision. Quezon City R.P. Garcia Publishing Company. How well an organization operates to realize its goal depends upon the degree of integration
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An alpha level of 0.05 is arbitrary and was set as a standard by scientists. One of the key concepts in hypothesis testing is that of significance level or‚ the alpha level‚ which specifies the probability level for the evidence to be an unreasonable estimate. Unreasonable means that the estimate should not have taken its particular value unless some non-chance factor(s) had operated to alter the nature of the sample such that it was no longer representative of the population of interest Remember
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Prof 11/9/14 Joy of Stats Hans Rosling is a statistician and also the narrator of the documentary “Joy of Stats.” Statistics is the science of collecting data and learning from it. Statistics can show you the amount of babies that were born during World War II‚ or predict the amount of babies that could be born in 2030. In the documentary it shows the use of stats through out history‚ technology‚ and the development of the world‚ pretty much the overall practical use of stats. The first use of
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Statistics 5371 Final Exam Review Fall 2012. 1. Suppose a researcher wants to design a new study with a power of 0.8 and a significance of 0.05 to test whether the caffeine content for a brand of coffee is really 100mg. A previous study gave a mean caffeine level for this brand of 110 mg and a standard deviation of 7 mg. Use PROC POWER to determine how many cups of coffee need testing. 2. A company did a study to estimate the effect of different promotional strategies on the market share of
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1. When someone says they are going to us a sample to draw an inference about a population‚ it means that rather than survey the entire population‚ they’ll survey a smaller group and apply the results to a larger group. For example‚ if you take a neighborhood in a town with 100 homes and survey approximately 80% of the households and 76% of those families own multiple televisions you may infer that the majority of the 100 home neighborhood also own multiple televisions. A simple random sample
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Schedule for Stat 21‚ Fall 2013 Note: Chapter readings are from FPP‚ and SG refers to Professor Philip Stark’s free online text SticiGui. “notes by RP” indicates Professor Roger Purves’ notes on chance variables‚ which will be posted on Canvas later. Week 1 (8/29): • Reading:chapters 3‚ 4; SG 3‚ 4 • Histograms‚ measures of location and spread‚ first look at Markov and Chebyshev Week 2 (9/3‚ 9/5) • Reading: chapters 5‚ 8‚ 9; SG: 6‚ 7‚8 • Finish chapter 4 • Normal curve‚ normal approximation
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