If You Wanted to Test If Antibacterial Soap Worked Better

question 4

Multiple Choice

If you wanted to test if antibacterial soap worked better than regular soap, which experiment below has the strongest experimental design?

• A)Have people wash with antibacterial soap first and later with regular soap.
• B)Have two groups of people wash with either antibacterial or regular soap.
• C)Have two groups of people wash with either antibacterial or regular soap, without knowing which type of soap they are using.
• D)Have two groups of people wash with either antibacterial or regular soap, with neither the researchers nor the groups knowing which type of soap they are using.

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Definitions:

Oil Exploration

The process of searching for underground or underwater oil reserves with the goal of drilling and extracting oil.

Standard Costs

Predetermined costs for manufacturing a product or providing a service, used as benchmarks to measure performance.

Materials Price Variance

The difference between the actual cost of materials and the expected cost at standard prices.

Variable Overhead

Refers to the costs of production that fluctuate with the level of output, such as utilities and materials, that do not have a fixed price associated with production levels.