QUESTION Quality Beverages, a non-liquor wholesaler incorporated in Washington, is interested in assessing the effect of the price of a premium juice on the quantity sold. The results in the table below on price, in dollars, and sales, in cases, were obtained from a sample of eight weeks of sales records. Price, x Sales, y 19 20 24 21 18 19 17 27 12 14 18 13 10 15 29 25 a) Draw a scatter diagram of the given data on graph paper and comment on the relationship between the price and sales. b) Find the equation of the estimated least squares regression line of y = a + bx and plot the line on the same graph as the scatter diagram. c) Interpret the values of a and b in your estimated least squares regression line. d) Compute the correlation coefficient and the coefficient of determination. Comment on your results. e) Estimate the sales when the price is i. 16. ii. 33. Comment on the reliability of the estimates.

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
icon
Related questions
Question

Hello, Can I get help with this question?

QUESTION
Quality Beverages, a non-liquor wholesaler incorporated in Washington, is interested in
assessing the effect of the price of a premium juice on the quantity sold. The results in the
table below on price, in dollars, and sales, in cases, were obtained from a sample of eight
weeks of sales records.
Price, x
Sales, y
19
20
24
21
18
19
17
27
12
14
18
13
10
15
29
25
a) Draw a scatter diagram of the given data on graph paper and comment on the
relationship between the price and sales.
b) Find the equation of the estimated least squares regression line of y = a + bx and
plot the line on the same graph as the scatter diagram.
c) Interpret the values of a and b in your estimated least squares regression line.
d) Compute the correlation coefficient and the coefficient of determination. Comment on
your results.
e) Estimate the sales when the price is
i. 16.
ii. 33.
Comment on the reliability of the estimates.
Transcribed Image Text:QUESTION Quality Beverages, a non-liquor wholesaler incorporated in Washington, is interested in assessing the effect of the price of a premium juice on the quantity sold. The results in the table below on price, in dollars, and sales, in cases, were obtained from a sample of eight weeks of sales records. Price, x Sales, y 19 20 24 21 18 19 17 27 12 14 18 13 10 15 29 25 a) Draw a scatter diagram of the given data on graph paper and comment on the relationship between the price and sales. b) Find the equation of the estimated least squares regression line of y = a + bx and plot the line on the same graph as the scatter diagram. c) Interpret the values of a and b in your estimated least squares regression line. d) Compute the correlation coefficient and the coefficient of determination. Comment on your results. e) Estimate the sales when the price is i. 16. ii. 33. Comment on the reliability of the estimates.
Expert Solution
steps

Step by step

Solved in 2 steps

Blurred answer
Recommended textbooks for you
MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
Probability and Statistics for Engineering and th…
Probability and Statistics for Engineering and th…
Statistics
ISBN:
9781305251809
Author:
Jay L. Devore
Publisher:
Cengage Learning
Statistics for The Behavioral Sciences (MindTap C…
Statistics for The Behavioral Sciences (MindTap C…
Statistics
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning
Elementary Statistics: Picturing the World (7th E…
Elementary Statistics: Picturing the World (7th E…
Statistics
ISBN:
9780134683416
Author:
Ron Larson, Betsy Farber
Publisher:
PEARSON
The Basic Practice of Statistics
The Basic Practice of Statistics
Statistics
ISBN:
9781319042578
Author:
David S. Moore, William I. Notz, Michael A. Fligner
Publisher:
W. H. Freeman
Introduction to the Practice of Statistics
Introduction to the Practice of Statistics
Statistics
ISBN:
9781319013387
Author:
David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:
W. H. Freeman