The biostatistician in your department recommends that you change your milk protein measurement to one that is the number of servings per day. You continue to use the actual quantity of the serum antibodies. What analysis method do you recommend?

You are asked to conduct a study to determine whether there is an association between consumption of milk proteins and levels of serum antibodies in children with autism. You randomly select 50 children previously enrolled in an autism clinical trial, and they are the sample for the study. You select an alpha of 0.05 and a power of 0.80.