What is the least squares regression line

Reference no: EM131409323

A tire company has carried out tests in which rolling resistance (pounds) and inflation pressure (pounds per square inch, or psi) have been measured for psi values ranging from 20 to 45. The regression analysis is summarized in the following Minitab printout:

a. To the greatest number of decimal places in the printout, what is the least-squares regression line?

b. What proportion of the variation in rolling resistance is explained by the regression line?

c. At what level of significance does the slope of the line differ from zero? What type of test did Minitab use in reaching this conclusion?

d. At what level of significance does the coefficient of correlation differ from zero? Compare this with the level found in part (c) and explain either why they are different or why they are the same.

e. Construct the 95% confidence interval for the slope of the population regression line.

Reference no: EM131409323

Questions Cloud

Zollinger-ellison syndrome : Explain why levels of gastrin are elevated during Zollinger-Ellison Syndrome? Must be 1500-2500 words in essay form and be cited full detailed

Biomedical and clinical applications of melanotropins : Describe the biomedical and clinical applications of melanotropins. Must be 1500-2500 words, with cited work, must be in essay form.

Which organizational model best describes your organization : Workplace trends within and outside health care require employees to connect with an ever-widening array of coworkers, consultants, off-site employees, and other resources. Sharing knowledge is critical to any organization's success, especially in..

Dilute to obtain containing : If you have some apple juice containing 2 grams of sugar of per oz. How would you dilute this to obtain containing between 50 -100 µg/ml sugars? (1 oz.= 29.57 ml)

What is the least squares regression line : To the greatest number of decimal places in the printout, what is the least-squares regression line?- What proportion of the variation in rolling resistance is explained by the regression line?

Why is international trade important to a nation : Do increased global linkages mean increased risk or more reward? Explain. Why is international trade important to a nation? What would happen if international trade were ignored?

Examine the common elements of compensation packages : Examine the common elements of compensation packages. Determine which two elements you believe to be the most motivational to an employee and to you. Support your position.

What level of repairs would be predicted for rear crash test : If a sport utility vehicle were to incur $1000 in damages in the front-crash test, what level of repairs would be predicted for the rear-crash test?

Formulate this as an lp problem : How should the production be scheduled so as to minimize the total costs? Formulate this as an LP problem.

User Account

All Pages