Each box Healthy Crunch breakfast cereal contains a coupon entitling you to a free package of garden seeds. At the Healthy Crunch home office, they use the weight of incoming mail to determine how many of their employees are to be assigned to collecting coupons and mailing out seed packages on a given day. (Healt y number of employees required to process the mail in one working day. A random sample of 8 days gave the following data. ‹ (lb). 12 y (Number of employees) 7 LAUSE SALT 23 De=131: D821 D²2.4191 ²940: Day - 1,492 (a) Find yb, and the equation of the least-squares line. (Round your and y to two decimal places. Round your least-squares estimates to three decimal places.) x= 20 13 سیمیا کے سمیرا (b) Draw a scatter diagram for the data. Plot the least-squares line on your scatter diagram. 10 O 25 20 13 3 10 19 10 9 16 6 10 5 13 10 12 18 23 2 25 8 14 13 16 20 25 30 25 20 10 25 20 13 10 KK 13 20 25 10 15 20 23 (e) Find the sample correlation coefficient and the coefficient of determination. (Round your answers to three decimal places.) 2.1 O 5 10 15 20 23 What percentage of variation in y is explained by the least-squares model? (Round your answer to one decimal place.) 30 (d) If Healthy Crunch receives 16 pounds of mail, how many employees should be assigned mail duty that day? (Round your answer to two decimal places.) employees
Each box Healthy Crunch breakfast cereal contains a coupon entitling you to a free package of garden seeds. At the Healthy Crunch home office, they use the weight of incoming mail to determine how many of their employees are to be assigned to collecting coupons and mailing out seed packages on a given day. (Healt y number of employees required to process the mail in one working day. A random sample of 8 days gave the following data. ‹ (lb). 12 y (Number of employees) 7 LAUSE SALT 23 De=131: D821 D²2.4191 ²940: Day - 1,492 (a) Find yb, and the equation of the least-squares line. (Round your and y to two decimal places. Round your least-squares estimates to three decimal places.) x= 20 13 سیمیا کے سمیرا (b) Draw a scatter diagram for the data. Plot the least-squares line on your scatter diagram. 10 O 25 20 13 3 10 19 10 9 16 6 10 5 13 10 12 18 23 2 25 8 14 13 16 20 25 30 25 20 10 25 20 13 10 KK 13 20 25 10 15 20 23 (e) Find the sample correlation coefficient and the coefficient of determination. (Round your answers to three decimal places.) 2.1 O 5 10 15 20 23 What percentage of variation in y is explained by the least-squares model? (Round your answer to one decimal place.) 30 (d) If Healthy Crunch receives 16 pounds of mail, how many employees should be assigned mail duty that day? (Round your answer to two decimal places.) employees
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
Related questions
Question
Transcribed Image Text:Each box of Healthy Crunch breakfast cereal contains a coupon entitling you to a free package of garden seeds. At the Healthy Crunch home office, they use the weight of incoming mail to determine how many of their employees are to be assigned to collecting coupons and mailing out seed packages on a given day. (Healthy Crunch has a policy c
y = number of employees required to process the mail in one working day. A random sample of 8 days gave the following data.
x (lb)
12
y (Number of employees) 7
v=
b=
USE SALT
25
20
Σx = 131; Σy = 82; Σχ? = 2,419; Σy? = 940; Σxy = 1,492
(a) Find x, y, b, and the equation of the least-squares line. (Round your x and y to two decimal places. Round your least-squares estimates to three decimal places.)
15
10
(b) Draw a scatter diagram for the data. Plot the least-squares line on your scatter diagram.
y
O
y
25
20
15
10
O
5
5
5
10
10
15
15
9
20
20
16
10
25
5
25
12
8
30
30
18 23 25
14 13. 16
20
D
15
10
y
25
25
20
15
O
10
5
5
10
10
15
15
20
20
25
25
30
What percentage of variation in y is explained by the least-squares model? (Round your answer to one decimal place.)
30
(c) Find the sample correlation coefficient r and the coefficient of determination. (Round your answers to three decimal places.)
2 =
(d) If Healthy Crunch receives 16 pounds of mail, how many employees should be assigned mail duty that day? (Round your answer to two decimal places.)
employees
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
This is a popular solution!
Trending now
This is a popular solution!
Step by step
Solved in 5 steps with 4 images
Recommended textbooks for you
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
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
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
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
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning
Elementary Statistics: Picturing the World (7th E…
Statistics
ISBN:
9780134683416
Author:
Ron Larson, Betsy Farber
Publisher:
PEARSON
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
Statistics
ISBN:
9781319013387
Author:
David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:
W. H. Freeman