EP INTRODUCTION TO PROBABILITY+STAT.
EP INTRODUCTION TO PROBABILITY+STAT.
14th Edition
ISBN: 2810019974203
Author: Mendenhall
Publisher: CENGAGE L
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Chapter 13.4, Problem 13.13E

a.

To determine

To find: The best model by comparing them.

b.

To determine

To provide: The comment on the usefulness of the model that has been chosen in above part. Also, explain whether is it valuable in predicting the overall score based on the selected predictor variables.

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Corvette, Ferrari, and Jaguar produced a variety of classic cars that continue to increase in value. The data showing the rarity rating (1–20) and the high price ($1000s) for 15 classic cars is contained in the Excel Online file below. Construct a spreadsheet to answer the following questions.     Open spreadsheet   Develop a scatter diagram of the data using the rarity rating as the independent variable and price as the dependent variable. Does a simple linear regression model appear to be appropriate?   A simple linear regression model _________appearsdoes not appear to be appropriate. Develop an estimated multiple regression equation with  rarity rating and  as the two independent variables.        (to whole numbers) What is the value of the coefficient of determination? Note: report  between 0 and 1.  (to 3 decimals) What is the value of the  test statistic?  (to 2 decimals) What is the -value?  (to 4 decimals) Consider the nonlinear relationship shown by equation .…
Use Data Set 7 found on my website for this question. Consider two models: Big and Small. Both models are predicting Exam Tot. Big uses four variables (Female?, Year, Time, and H Total) to predict Exam Tot. Small uses two variables (Time and H Total) to predict Exam Tot. Run a regression for each model. Which one is a better model?     Small is better, but it's arguable that Big is better     Clearly Big     Both are equally good / It's hard to tell.     Big is better, but it's arguable that Small is better     Clearly Small
Is It Getting Harder to Win a Hot Dog Eating Contest?Every Fourth of July, Nathan’s Famous in New York City holds a hot dog eating contest. The table below shows the winning number of hot dogs and buns eaten every year from 2002 to 2015, and the data are also available in HotDogs. The figure below shows the scatterplot with the regression line. Year     Hot Dogs 2015   62 2014   61 2013   69 2012   68 2011   62 2010   54 2009   68 2008   59 2007   66 2006   54 2005   49 2004   54 2003   45 2002     50 Winning number of hot dogs in the hot dog eating contest Winning number of hot dogs and buns Click here for the dataset associated with this question.   (a) Is the trend in the data mostly positive or negative?     Positive   Negative   (b) Using the figure provided, is the residual larger in 2007 or 2008?Choose the answer from the menu in accordance to item (b) of the question statement  20072008 Is the residual positive or…
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