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MMLU / A manufacturer of ready-bake cake mixes is interested in designing an experiment…

Problem

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question

A manufacturer of ready-bake cake mixes is interested in designing an experiment to test the effects of four different temperature levels (300, 325, 350, and 375F), two different types of pans (glass and metal), and three different types of ovens (gas, electric, and microwave) on the texture of its cakes, in all combinations. Which of the following below is the best description of the design of the necessary experiment?

choices

  1. A completely randomized design with nine treatment groups
  2. A completely randomized design with 24 treatment groups
  3. A randomized block design, blocked on temperature, with six treatment groups
  4. A randomized block design, blocked on type of pan, with 12 treatment groups

subject

high_school_statistics

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