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

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

Calculus For The Life Sciences

2nd Edition

ISBN:9780321964038

Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.

Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.

Chapter1: Functions

Section1.2: The Least Square Line

Problem 8E

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