To study short term effects of smoking, a sample of 100 smokers was drawn. Each person was asked to report the average number of cigarettes smoked per day and the number of days absent from work due to health reasons. A regression model was used to study the relationship between numbers of cigarettes smoked on number of days absent from work due to health reasons. Use Smoking3.xlsx for your analysis. If, on average, a person smokes 10 cigarettes a day, on average how many days would you expect that person to be absent from work? What is the correlation coefficient between the number of cigarettes and the number of days absent from work? What percentage of variation in number of days absent from work' IS explained Iby the number of cigarettes each smoker smokes? What" Is the standard deviation of lprediction errors for this model