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the manager of a public swimming pool wants to compare the effectiveness of two laundry detergents, detergent a and detergent b, in cleaning the towels that are used daily. as each dirty towel is turned in, it is placed into the only washing machine on the premises. when the washing machine contains 20 towels, the manager flips a coin to determine whether detergent a or detergent b will be used for that load. the cleanliness of the load of towels is rated on a scale of 1 to 10 by a person who does not know which detergent was used. the manager continues this experiment for many days. which of the following best describes the manager’s study?
the manager of a public swimming pool wants to compare the effectiveness of two laundry detergents, detergent a and detergent b, in cleaning the towels that are used daily. as each dirty towel is turned in, it is placed into the only washing machine on the premises. when the washing machine contains 20 towels, the manager flips a coin to determine whether detergent a or detergent b will be used for that load. the cleanliness of the load of towels is rated on a scale of 1 to 10 by a person who does not know which detergent was used. the manager continues this experiment for many days. which of the following best describes the manager’s study?
Final answer:This is a randomized controlled, single-blind experiment aiming at comparing the efficacy of two detergents.Explanation:The study described by the manager is a type of experiment known as arandomized controlled trial, specifically asingle-blind experiment. In this methodology, the manager does not bias the experiment by choosing which detergent to use; rather, that is determined randomly through the flipping of a coin. Furthermore, the person rating the cleanliness of towels is not aware of which detergent was used, which helps eliminate any potential bias in judging. The variation in results (the cleanliness score) should then be primarily due to the detergents used rather than any extraneous variables. These results can then be compared to determine which detergent, A or B, performs better under the given conditions.Learn more about single-blind experiment here:brainly.com/question/32668423#SPJ11...