You Want to Know Whether Cookies Made with Unbleached Flour

question 37

Multiple Choice

You want to know whether cookies made with unbleached flour taste better than cookies made with bleached flour; which of the following has the strongest experimental design to test this question?

• A)Make two batches of cookies, both with bleached flour; one taster tries both types and ranks which type they like best.
• B)Make two batches of cookies, one with bleached flour and one with unbleached flour; one taster tries both types and ranks which type they like best.
• C)Make two batches of cookies, one with bleached flour and one with unbleached flour; twenty tasters try both types and rank which type they like best.
• D)Make two batches of cookies, one with bleached flour and one with unbleached flour; twenty tasters try both types without knowing which ones they are eating and rank which type they like best.

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Definitions:

Fixed Cost

Expenses that do not change in proportion to the level of goods or services produced by a business.

Author Royalties

Author royalties are payments made by publishers to authors for the right to use, produce, or sell the authors' creations, usually a percentage of sales.

Fixed Cost

Expenses that do not change in relation to the level of goods or services produced over a certain period.

Variable Cost

Costs that change in proportion to the good or service that a business produces, such as materials and labor directly involved in production.