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 x = 190, = = 86, i=1 i=1 10 10 10 ? = 3672, ? = 824.62, = 824.62, xiyi = 1565.8 i=1 i=1 i=1 XiYi In testing the significance of linear relationship between X and Y, Ho =0 versus Ho0, when = 0.05, what is the test value and the decision? The test value is -7.747 and we fail to reject the null hypothesis. The test value is -2.225 and we reject the null hypothesis. None of all. The test value is -1.747 and we fail to reject the null hypothesis. The test value is -2.225 and we fail to reject the null hypothesis. The test value is -1.747 and we reject the null hypothesis. The test value is -7.747 and we reject the null hypothesis.