A researcher for a company selling headphones conducts an experiment to determine whether there is correlation between the number of adverts posted via Twitter and number of head- phones sold. The data recorded over 6 months is shown below Month January February March April May June Number of Tweets posted Number of headphones sold 31 15 42 51 60 29 250 170 302 350 415 255 A regression line for the above table is of the form y = A+ Bx. The correlation coefficient is represented by r. If there was no relationship between the number of tweets posted and the number of head- phones sold which of the following would be true? А. А — 0 В. х — 0 C. r = 0 D. y = 0

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

if there was no relationship between the number of tweets posted and the number of head-phones sold which of the following would be true

A researcher for a company selling headphones conducts an experiment to determine whether
there is correlation between the number of adverts posted via Twitter and number of head-
phones sold. The data recorded over 6 months is shown below
Month
January February
March
April
May
June
Number of
Tweets posted
Number of
headphones
sold
31
15
42
51
60
29
250
170
302
350
415
255
A regression line for the above table is of the form y = A+ Bx. The correlation coefficient is
represented by r.
If there was no relationship between the number of tweets posted and the number of head-
phones sold which of the following would be true?
A. A = 0
B. x = 0
C. r = 0
D. y = 0
Transcribed Image Text:A researcher for a company selling headphones conducts an experiment to determine whether there is correlation between the number of adverts posted via Twitter and number of head- phones sold. The data recorded over 6 months is shown below Month January February March April May June Number of Tweets posted Number of headphones sold 31 15 42 51 60 29 250 170 302 350 415 255 A regression line for the above table is of the form y = A+ Bx. The correlation coefficient is represented by r. If there was no relationship between the number of tweets posted and the number of head- phones sold which of the following would be true? A. A = 0 B. x = 0 C. r = 0 D. y = 0
Expert Solution
steps

Step by step

Solved in 2 steps with 2 images

Blurred answer
Follow-up Questions
Read through expert solutions to related follow-up questions below.
Follow-up Question

Calculate the equation of the regression line and calculate the correlation coefficient

Solution
Bartleby Expert
SEE SOLUTION
Similar questions
  • SEE MORE QUESTIONS
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