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The National Automobile Dealers Association (NADA) publishes AutoExec magazine, which annually reports on new vehicle sales and market shares by manufacturer. As given on the AutoExec magazine website in May 2006, new vehicle market shares in the United States for 2005 were as follows1: Chrysler/Dodge/Jeep 13.6%, Ford 18.3%, GM 26.3%, Japanese (Toyota/Honda/Nissan) 28.3%, other imports 13.5%. Construct a percent frequency bar chart and a percentage pie chart for the 2005 auto market shares.
A researcher is asked to determine whether or not a productivity objective (in dollars) of better than $75,000 per employee is possible. A productivity test is done involving 20 employees. What conclusion would you reach? The sales are as f..
Comment on the sign of each estimated coefficient in turn, and state whether this is what you expect. Ignore significance at this stage.
By using R code, Data on last year's sales ( y, in 100,000s of dollars) in 15 sales districts are given in the file sales. This file also contains promotional expenditures(x1, in thousands of dollars), the number of active accounts(x2), the number of..
A particular district of your nation had a higher incidence rate for polio last year compared to the rest of the country. That region has been traditionally been resistant to vaccination efforts. You have commissioned a case-control study for the vil..
What is Goldbergs rationale for the study? Was the study designed to contribute to theory? Do the results of the study contribute to theory and how does a multiple-baseline design differ from a reversal design?
If you purchase (randomly select) a Starbird 300 and your car gets 27 mpg in city driving, what do you think of United Motors' claim? Explain your answer.
Describe the discrete-time Markov chain (X(t)) and transition probability matrix What is the probability that a faculty member leaves the department on "bad terms"?
What is the General Linear Model (GLM)? Why does it matter and compare and contrast parametric and nonparametric statistics. Why and in what types of cases would you use one over the other?
1. Body Mass Index (BMI) is a number calculated from a person's weight and height and is calculated by the formula: weight (kg) / [height (m)]2. Though somewhat controversial and not meant to be used as a diagnostic criteria, it can be used to charac..
Create a correlation table for the variables in our data set. Reviewing the data levels from week 1, what variables can be used in a Pearson's Correlation table (which is what Excel produces)
1. eithernbsp find a newspaper tv radio or web article that reports some scientific study or statistical analysis of
Find the z-scores for which 88% of the distributions area lies within -z and z. The z-scores are ?
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