A Farmer Wishes to Determine Which of Two Brands of Baby-Pig

question 29

Multiple Choice

A farmer wishes to determine which of two brands of baby-pig pellets, Kent or Moormans, produces better weight gain. Two of his sows each give birth to litters of 10 pigs on the same day, so he decides to give the baby pigs in litter A only Kent pellets, while the pigs in litter B will get only Moormans pellets. After four weeks, the average weight gain for pigs in litter A is greater than the average weight gain for pigs in litter B. The feed they get is not the only factor affecting the rate at which pigs gain weight. Genetic differences also affect weight gain. It is likely that the pigs in litter A are genetically different from the pigs in litter B since the two litters have different mothers.
What experimental design technique could the farmer use to take into account the genetic differences?

• A) Placebo
• B) Blocking
• C) Probability sampling
• D) Double blinding
• E) Observational study

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Definitions:

Indirect Materials

Indirect materials are supplies used in the production process that, unlike direct materials, are not part of the finished product, such as lubricants and cleaning supplies.

Direct Materials

Raw materials that are directly traceable to the production of specific goods or services and are considered variable costs.

Work in Process Inventory

Goods that are in various stages of the production process but are not yet complete products.

Finished Goods Inventory

Items that are fully manufactured, prepared for sale, and available for customers to buy.