With no explanation, label text_A→text_B with either "no" or "yes".
text_A: For infants with nonsmoking mothers and low infant birth weight, the probability of high infant mortality is 88%. For infants with nonsmoking mothers and normal infant birth weight, the probability of high infant mortality is 42%. For infants with smoking mothers and low infant birth weight, the probability of high infant mortality is 81%. For infants with smoking mothers and normal infant birth weight, the probability of high infant mortality is 56%. For infants with nonsmoking mothers and with poor health, the probability of normal infant birth weight is 98%. For infants with nonsmoking mothers and with good health, the probability of normal infant birth weight is 92%. For infants with smoking mothers and with poor health, the probability of normal infant birth weight is 47%. For infants with smoking mothers and with good health, the probability of normal infant birth weight is 47%. The overall probability of good health is 44%.
text_B: Does maternal smoking status positively affect infant mortality through infant's birth weight?
yes.