Solution Library


Study About Doctors and Other Professionals and The Difference in their Breakfast

QuestionA survey asked professionals “Which of the following is your most common choice for breakfast?” Using the following data from a random survey, determine whether doctors choose breakfasts in different proportions from other professionals, to a 0.05 significance level.  & ... Read More

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Finding Mean Standard Deviation and Regression from Gini Coefficient Data

Question This question requires you to analyze the dataset “world-ec.csv". The unit of observation is the nation-state. The variables are per capita Gross Domestic Product (purchasing power parity terms, 2010) and the last recorded Gini Coeffcient for the country. (The Gini Coeffcient is a m ... Read More

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Finding Mean and Standard Deviation For Presidential Elections between 1948 and 2004

QuestionThis question requires you to analyze the dataset “presvote.csv”. It contains data on presidential election vote shares for the party of the incumbent president from 1948 to 2004. The variables are defined in the spreadsheet.(a) What is the average and standard deviation of the i ... Read More

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Calculate the Regression for Abortion Restrictions and Church Attendance

QuestionThis question requires you to download and analyze the dataset “abortion-laws.csv”. Consult the associated abortion-codebook.csv" for variable definitions.(a) Estimate a regression model with the total number of abortion restrictions as the dependent variable, and church attenda ... Read More

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Calculating Multiple Regression For The Insurance Industry

QuestionA researcher in the insurance industry is interested in the time (in months) it takes an insurance firm to adopt an innovation in the way in which business is conducted in the industry.  He believes the elapsed time involved can be explained by the size of the firm (total assets in mill ... Read More

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Calculating Regression from the Financial Data of a Company

QuestionChoose a particular company. For example, (TWC).Time Warner Cable. Estimate the revenue, receivable, inventory, or payables using regression method .Find their financial data at http://finance.yahoo.com/   calculate a projection for the next twelve months. And present your data and ... Read More

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Testing Manufacturer’s Claim on Toy’s Demands

Question Monsterz Toyz has developed a new action figure for boys that comes in six different colors. The manufacturer claims that the ratio of colors in each batch (in order from least to most popular) is 10% green, 10% red, 15% white, 20% yellow, 20% black and 25% blue. The last batch from the fa ... Read More

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Study on People’s Memory Using Pearson Correlation Coefficient

QuestionA researcher ran a study to determine the relationship between how good a person thinks their memory is and how well they actually do on a memory task. They were asked to score their memory (where 1 = very poor and 10 = excellent). Their actual memory was tested by showing them a video of a ... Read More

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Study on Young Offenders According to their Birth Order

QuestionA Youth Correction Center completed a study to explore the proportion of delinquent behavior, according to birth order, among two groups of teenagers (males and females, age 12-17). The data are given in the table below. Determine whether there is a difference between male and female offende ... Read More

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Study on Comparison of LSAT, SAT Verbal and SAT Math

QuestionA professor wants to analyze the relationship between his students’ LSAT practice scores and their Verbal SAT and Math SAT scores from high school. The table below represents 15 randomly selected students’ raw scores on the various standardized tests. Student    &n ... Read More

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Calculating Statistical Values from Australian Department of Transport on Road Deaths in 2008

QuestionRoad fatalities are a major concern to many governments, including the Australian. Road accidents not only cause driver fatalities, but also the death of many road users such as passengers in vehicles, pedestrians, motorcyclists and cyclists. The following table presents data in 2008 for the ... Read More

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Calculating The Incidence of University Graduates Receiving Job Offers With 90% Confidence Level

QuestionThe job placement service at a university observed the not unexpected result of the variance in marks and work experience of the university’s graduates: some graduates received numerous offers, whereas others receive far fewer. To learn more about the problem, a survey was conducted of ... Read More

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