(b) What is the design of this experiment? Choose the best design from the given options. First, divide the infants into two groups: peanut allergy or no peanut allergy. Then, within these groups, randomly assign one third of each group to completely avoid peanuts for 60 months, and one third to consume peanuts in relatively large amounts over 60 months, and then compare the results. Divide the infants into two equal groups, then randomly assign half of each group to completely avoid peanuts for 60 months and half to consume peanuts in small amounts over 60 months and compare results. First, divide the infants into two groups: peanut allergy or no peanut allergy. Then, within these groups, randomly assign half of each group to completely avoid peanuts for 60 months and half to consume peanuts in small amounts over 60 months and compare results. Because this is a random study, the infants were assigned randomly into two groups. Then, within these groups, randomly assign half of each group to completely avoid peanuts for 60 months and half to consume peanuts in small amounts over 60 months and compare results. (c) Of the 640 infants in the study, only 98 had a diagnosed peanut allergy at the beginning of the study. Explain why you think the researchers decided to split the infants into two groups before randomly assigning them to the conditions. Peanut allergy was identified as an explanatory variable of eczema symptoms. By blocking by peanut allergy or no peanut allergy, researchers are attempting to control the effects of peanut allergy on the differences between the treatments of avoidance or exposure in small amounts to peanuts in the experiment. Peanut allergy was identified as a cause of eczema symptoms. By splitting the infants with peanut allergies the researchers are trying to reduce the effect of pre-existing peanut allergy on the results of the study. O Peanut allergy was identified as a confounding variable of eczema symptoms. By blocking by peanut allergy or no peanut allergy, researchers are attempting to control the effects of peanut allergy on the differences between the treatments of avoidance or exposure in small amounts to peanuts in the experiment. Peanut allergy was identified as a response variable of eczema symptoms. By blocking by peanut allergy or no peanut allergy, researchers are attempting to control the effects of peanut allergy on the differences between the treatments of 5 JAN