Statistics

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Creating Classifier Data using Logistic Regression

Question The director of the MBA program at Salterdine University wants to develop a procedure to determine which applicants to admit to the MBA program. The director believes that an applicant’s undergraduate grade point average (GPA) and score on the GMAT exam are helpful in predicting whic ... Read More

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Probability of Success of Happy Harrys Hamburgers

Question Happy Harry's Hamburgers recently commissioned a top tier consulting company to develop a new location selection process. However, after receiving the first invoice from the consulting company, Happy Harry wasn't... happy that is, and he decided to cancel the remainder of the engagement. ... Read More

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Probability of Defective Lightbulbs in a Sample of 40

Question If the probability of a defective light bulb is 0.06, to be 98 % confident, up to how many defective lightbulbs should you expect in a sample of 40 lightbulbs? Summary This question belongs to statistics and discusses about probability of finding defective lightbulbs. Word count: NA &n ... Read More

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Vendor Stock for Hot Dog Concession at Safeco Field

Question A hot dog concession at Safeco Field sells an average of 33.2 hot dogs per hour (believed to follow a Poisson Distribution). How many hot dogs should the vendor stock in order to be 93% sure it has enough hot dogs for 2.5 hour(s)? F^-1(0.93)=   X=90   Summary This question ... Read More

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Meta Analysis of Survival Benefit of Radiotherapy

Question We will be conducting a meta-analysis to investigate whether surgery (cystectomy) combined with radiotherapy has a survival benefit (measured at 3-years) compared to radiotherapy alone for patients with bladder cancer. Conduct a keyword search in (ovid) Medline (untick “Map Term t ... Read More

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Meta Analysis of Chocolate Consumption and Cardiometabolic Disorders

Question Explain a “component cause” using the Rothman framework. In your answer you need to mention how sufficient and necessary causes relate to a component cause. Is this statement true or false? Lack of consistence does not necessarily constitute evidence against a causal associa ... Read More

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Statistics that a Professor Teaches are not Performing at the Same Level or Not

Question A professor is concerned that the two sections of statistics that she teaches are not performing at the same level. To test her claim, she looks at the mean exam score for a random sample of students from each of her classes. In class 1, the mean exam score for 12 students is 78.7 with a s ... Read More

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Testing Claim of SAT prep Course Claims to Increase Student Scores

Question An SAT prep course claims to increase student scores by more than 60 points, on average. To test this claim, 9 students who have previously taken the SAT are randomly chosen to take the prep course. Their SAT scores before and after completing the prep course are listed in the following ta ... Read More

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Sufficient Evidence to Say that Batting Average has Improved

Question Adrian hopes that his new training methods have improved his batting average. Before starting his new regimen, he was batting 0.220 in a random sample of 50 at bats.  For a random sample of 24 at bats since changing his training techniques, his batting average is 0.375.  Determin ... Read More

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Project Report on Life Expectancy at Birth in World in 2012

Question Prepare a project report on Life expectancy at birth, total (years) in world in 2012 Objectives Identify a hypothesis testing problem in Conduct a survey to verify or dispute the results of the hypothesis Summarize the article, analysis, and conclusions in a report   Summary ... Read More

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Regression Analysis of Digital Cell Phone Inc

Question Digital Cell Phone, Inc. Paul Jordan has just been hired as a management analyst at Digital Cell Phone, Inc. Digital Cell manufactures a broad line of phones for the consumer market. Paul’s boss, John Smithers, chief operations officer, has asked Paul to stop by his office this morn ... Read More

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Research on Gender Confusion among Urban Adolescents

Question Write a research paper on the topic "Gender confusion is more prevalent among urban adolescents." Summary This question belongs to statistics and discusses gender confusion among urban adolescents. Word count: 2480   ... Read More

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