c) Are these predictions likely to be useful? Explain. SECTION 14.7 17. The book

Question

c) Are these predictions likely to be useful? Explain. SECTION 14.7 17. The bookstore in Exercise 11 decides to have a gala event in an attempt to drum up business. They hire 100 employees for the day and bring in a total of S42,000. a) Find the regression line predicting sales from Number of people working with the new point added b) What has changed from the original regression equation c) Is the new point a high leverage point or an influential point? d) Does the new point have a large residual? Explain 18. The data for harddrivesin Exercise 12 omitted a 200 GB drive that sold for S299.00. a) Find the regression line predicting Price from Capacity with this hard drive added. b) What has changed from the original regression equation c) Is the new point a high leverage point or an influential point? d) Does the new point have a large residual? Explain CHAPTER EXERCISES 19. Online shopping. Several studies have found that the frequency with which shoppers browse Internet retail- ers is related to the frequency with which they actually purchase products and/or services online. Here are data showing the age of respondents and their answer to the

Explanation / Answer

This question can be solved using regression option in excel-> data-> data analysis-> regression

a)The new regression line is y(price)=66.567+0.088(x)

b)both the intercept and variable values changed. the previous regression equation is y(price)=18.62+0.104(x)

c)it is an influential observation as it chnaged bith the values of the equation

Related Questions

Navigate

• Browse (All)
• Browse C
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.