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Get the passenger car mileage data from https://lib.stat.cmu.edu/DASL/Data?les/carmpgdat.html
(a) Fit a multiple linear regression model to predict MPG (miles per gallon) from the other variables. Summarize your analysis.
(b) Use Mallow Cp to select a best sub-model. To search through the models try (i) forward stepwise, (ii) backward stepwise. Summarize your ?ndings.
(c) Use the Zheng-Loh model selection method and compare to (b).
(d) Perform all possible regressions. Compare Cp and BIC. Compare the results.
Collect data for at least 10 days. Do you think the data will provide a valid representation of these activities? Explain why or why not. Future SLP assignments depend on this data and thus this assignment needs to be completed early in the s..
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A researcher is evaluating the influence of a treatment using a sample selected from a normally distributed population with a mean of µ = 80 and a standard deviation of σ = 20. The researcher expects a 12 point treatment effect and plans to use a ..
Computer stocks currently provide an expected rate of return of 16%. Dell, a large computer company, will pay a year-end dividend of $2 per share.
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If the component lifetimes are independent uniform (0,1) random variables, determine the probability that the system life will be less than ½ .
In business, investors are always interested in the tradeoff between returns and risk. Regression analysis is a statistical technique that can be used to quantify this risk.
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