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Client : #TheTruth No Smoking Ad Campaign DODDO .... The data below is the amount of tar and nicotine in a sample of different brands of 100mm, non-menthol, filtered cigarettes. [6 points] Tar 6 16 17 13 13 14 9 15 13 |15 13 14 15 16 7 14 Nicotine |0.4 1 1.2 0.8 0.8 1.2 0.6 1 1.2 1.1 0.8 0.9 1.1 0.7 1.3 a) Using the calculator, find a linear regression model that gives the amount of nicotine, N, as a function of the amount of tar, t. Write the function below. N(t) = b) Use this model to estimate the amount of nicotine in a cigarette if the amount of tar is listed as 20mg. c) What is the correlation coefficient, r, for this model? r = d) What does this correlation coefficient indicate about this linear model