s the nicotine content of a cigarette related to the \"tars\"? A collection of d

Question

s the nicotine content of a cigarette related to the "tars"? A collection of data (in milligrams) on 29 cigarettes produced a scatterplot that trends upward (i.e. rises from left to right) and the value of R2-86.1%. Complete parts a through c. a) What is the correlation between tar and nicotine? Round to three decimal places as needed.) b) What would you predict about the average nicotine content of cigarettes that are 2 standard deviations below average in tar content? The nicotine content should be standard deviations below average Round to three decimal places as needed.) c) If a cigarette is 1 standard deviation above average in nicotine content, what do you suspect is true about its tar content? The tar content should be standard deviations above average. (Round to three decimal places as needed.)

Explanation / Answer

a)r =(R2)1/2 = 0.928

b) nicotine content should be =r*z =0.928*2=1.856 std deviation below

c) nicotine content should be =r*z =0.928*1=0.928 std deviation above

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