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Category > Applied Sciences Posted 25 May 2017 My Price 6.00

An industry study was recently conducted in which the sample correlation

14-1.  An industry study was recently conducted in which the sample correlation between units sold and market- ing expenses was 0.57. The sample size for the study included 15 companies. Based on the sample results, test to determine whether there is a significant posi- tive correlation between these two variables. Use an

a = 0.05.

 

x

y

 

10

120

14

130

16

170

12

150

20

200

18

180

16

190

14

150

a.

16

160

 

18

200

 

 
 

14-2. The following data for the dependent variable, y, and the independent variable, x, have been collected using simple random sampling:

 

 a.   Construct a scatter plot for these data. Based on the scatter plot, how would you describe the relationship between the two variables?

b.    Compute the correlation coefficient.

 

 

 

Answers

Alpha Geek
(8)
Status NEW Posted 25 May 2017 01:05 PM My Price 6.00

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Attachments

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