Final answer:
To design an experiment for Procter and Gamble's laundry detergent package update, the dependent variable would be the consumer preference for the new brand over the leading competitor. The independent variable would be the package design.
Step-by-step explanation:
To design an experiment for Procter and Gamble's laundry detergent package update, the dependent variable would be the consumer preference for the new brand over the leading competitor. The independent variable would be the package design. The treatment would involve testing different package designs and evaluating consumer preference.
The experiment should be administered by selecting a sample of consumers and randomly assigning them to different treatment groups, where each group receives a different package design. This random assignment helps control for extraneous factors and ensures a representative sample. Additionally, a control group without any change in package design should be included for comparison.
By using a randomized controlled experiment, Procter and Gamble can gather reliable data on consumer preference and accurately evaluate the impact of package design on their laundry detergent product.