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Q.8). In a regression calculation, a researcher finds that the explanatory variable x has mean 100 and SD 10, and the response variable y has mean 250 and SD 40. The regression equation is found to be y^= 450 – 2x. What is the correlation between x and y? (a) cannot tell from the information available (b) -0.8 (с) -0.5 (d) 0.4 (е) 0.1

Q.8). In a regression calculation, a researcher finds that the explanatory variable x has mean 100 and SD 10, and the response variable y has mean 250 and SD 40. The regression equation is found to be y^= 450 – 2x. What is the correlation between x and y? (a) cannot tell from the information available (b) -0.8 (с) -0.5 (d) 0.4 (е) 0.1

A First Course in Probability (10th Edition)
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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Q.8). In a regression calculation, a researcher finds that the explanatory variable x has mean 100 and SD 10, and the response variable y has mean 250 and SD 40. The regression equation is found to be y= 450 – 2x. What is the correlation between x and у? (a) cannot tell from the information available (b) -0.8 (с) -0.5 (d) 0.4 (е) 0.1
Transcribed Image Text:Q.8). In a regression calculation, a researcher finds that the explanatory variable x has mean 100 and SD 10, and the response variable y has mean 250 and SD 40. The regression equation is found to be y= 450 – 2x. What is the correlation between x and у? (a) cannot tell from the information available (b) -0.8 (с) -0.5 (d) 0.4 (е) 0.1
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