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Category > Statistics Posted 13 May 2017 My Price 5.00

Consider again the regression of Nicotine content

 

Another cigarette. Consider again the regression of Nicotine content on Tar (both in milligrams) for the cigarettes examined in Exercise 29.

a) What is the correlation between Tar and Nicotine?

b) What would you predict about the average Nicotine content of cigarettes that are 2 standard deviations below average in Tar content?

c) If a cigarette is 1 standard deviation above average in Nicotine content, what do you suspect is true about its Tar content?

Exercise 29:

Cigarettes. Is the nicotine content of a cigarette related to the “tars”? A collection of data (in milligrams) on 29 cigarettes produced the scatterplot, residuals plot, and regression analysis shown:

a) Do you think a linear model is appropriate here? Explain.

b) Explain the meaning of R2 in this context.

 

 

 
 

Answers

Alpha Geek
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Status NEW Posted 13 May 2017 11:05 AM My Price 5.00

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file 1494674651-Answer.docx preview (133 words )
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