A study is conducted to investigate the relationship between cigarette smoking during pregnancy and the weight of newborn infants. A sample of 10 women smokers kept accurate records of the number of cigarettes smoked during their pregnancies, and the weights of their children were recorded at birth. The statistics of the data are given below. 10 10 10 xi = 190, y = 85, i=1 10 10 = 3672, 4 = 824.62, xiyi = 1565.8 i=1 Find 95% confidence interval for the slope of the regression line. [-2.4974, -0.7026] O [-3.4974, -1.7026] [-1.4274, -0.7726] [-1.6159,0.0288] Non of them