A psychology graduate student is studying the effect of alcohol intoxication on a person's ability to perform manual tasks.In a very simple experiment,a subject's blood alcohol level is brought to a certain level and then the subject is presented with 10 rope knots.The subject then attempts to untie as many knots as he or she can in 30 seconds.The results of the experiments are summarized in the table below.
a)Re-express the number of knots untied by taking the inverse of each count,then plot the re-expressed data as a scatterplot.
b)Determine the regression equation and correlation coefficient for the re-expressed data.
c)Interpret the y-intercept of your model.Does it have meaning?

Question

A psychology graduate student is studying the effect of alcohol intoxication on a person's ability to perform manual tasks.In a very simple experiment,a subject's blood alcohol level is brought to a certain level and then the subject is presented with 10 rope knots.The subject then attempts to untie as many knots as he or she can in 30 seconds.The results of the experiments are summarized in the table below.  
a)Re-express the number of knots untied by taking the inverse of each count,then plot the re-expressed data as a scatterplot.  
b)Determine the regression equation and correlation coefficient for the re-expressed data.
c)Interpret the y-intercept of your model.Does it have meaning?

Quizplus · Accepted Answer

The Answer of A psychology graduate student is studying the effect of alcohol intoxication on a person's ability to perform manual tasks.In a very simple experiment,a subject's blood alcohol level is brought to a certain level and then the subject is presented with 10 rope knots.The subject then attempts to untie as many knots as he or she can in 30 seconds.The results of the experiments are summarized in the table below.  
a)Re-express the number of knots untied by taking the inverse of each count,then plot the re-expressed data as a scatterplot.  
b)Determine the regression equation and correlation coefficient for the re-expressed data.
c)Interpret the y-intercept of your model.Does it have meaning?

A Psychology Graduate Student Is Studying the Effect of Alcohol