In an attempt to develop a model of wine quality as judged by wine experts, data on alcohol content and wine quality was collected from variants of a particular wine. From a sample of 17 wines, a model was created using the percentages of alcohol to predict wine quality From the results of that regression, b, 0.2777 and Sp₁ = 0.1057. a. At the 0.05 level of significance, is there evidence of a linear relationship between the percentage of alcohol and wine quality? b. Construct a 95% confidence interval estimate of the population slope, ß,. a. Determine the hypotheses for the test. Choose the correct answer below. A. Ho P₁=0 H₁: B, #0 OD. Ho: B₁ 20 H₁: B₁<0 Compute the test statistic. STAT (Round to two decimal places as needed.) OB. Ho Bo≤0 OE. Ho B, 50 H₁ B₁>0 OC. Ho Po≥0 OF. Ho Po=0 H, Po#0

In an attempt to develop a model of wine quality as judged by wine experts, data on alcohol content and wine quality was collected from variants of a particular wine. From a sample of 17 wines, a model was created using the percentages of alcohol to predict wine quality From the results of that regression, b, 0.2777 and Sp₁ = 0.1057. a. At the 0.05 level of significance, is there evidence of a linear relationship between the percentage of alcohol and wine quality? b. Construct a 95% confidence interval estimate of the population slope, ß,. a. Determine the hypotheses for the test. Choose the correct answer below. A. Ho P₁=0 H₁: B, #0 OD. Ho: B₁ 20 H₁: B₁<0 Compute the test statistic. STAT (Round to two decimal places as needed.) OB. Ho Bo≤0 OE. Ho B, 50 H₁ B₁>0 OC. Ho Po≥0 OF. Ho Po=0 H, Po#0

Essentials of Business Analytics (MindTap Course List)

2nd Edition

ISBN:9781305627734

Author:Jeffrey D. Camm, James J. Cochran, Michael J. Fry, Jeffrey W. Ohlmann, David R. Anderson

Publisher:Jeffrey D. Camm, James J. Cochran, Michael J. Fry, Jeffrey W. Ohlmann, David R. Anderson

Chapter7: Linear Regression

Section: Chapter Questions

Problem 6P: A marketing professor at Givens College is interested in the relationship between hours spent...

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A marketing professor at Givens College is interested in the relationship between hours spent studying and total points earned in a course. Data collected on 156 students who took the course last semester are provided in the tile MktHrsPts. Develop a scatter chart for these data. What does the scatter chart indicate about the relationship between total points earned and hours spent studying? Develop an estimated regression equation showing how total points earned is related to hours spent studying. What is the estimated regression model? Test whether each of the regression parameters β0 and β1 is equal to zero at a 0.01 level of significance. What are the correct interpretations of the estimated regression parameters? Are these interpretations reasonable? How much of the variation in the sample values of total point earned does the model you estimated in part (b) explain? Mark Sweeney spent 95 hours studying. Use the regression model you estimated in part (b) to predict the total points Mark earned.
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