Assume that 21-day litter weight for pigs averages 98 lbs for Breed A and 106 lbs for Breed B. Litters of crossbred pigs from these two pure breeds…

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Assume that 21-day litter weight for pigs averages 98 lbs for Breed A and 106 lbs for Breed B. Litters of crossbred pigs from these two pure breeds average 113 lbs at 21 days. What is the % hybrid vigor for 21-day litter weight for these crossbred pigs