In a study of mother-infant interaction, mothers are rated by trained observers on the quality of their interactions with their infants. Mothers were classified on the basis of whether this was their first child or not and whether the infant was low-birth weight (LBW) or full-term (PT). The data represent a score on a 12-point scale, on which a higher score represents better mother-infant interaction. Use alpha = .05. _II-I_ Not Flrst Born X .I- mn a. What are your df (you should identify 5 df's)? What are your critical F's (there should be 3)? b. What are the values of your observed F's (there should be 3)? c. Based on the above information, would you reject H0, or fail to reject it? Why? What would your conclusions be? d. Graph your interaction term and identify how it reects whether you found a significant or nonsignificant interaction