Answer :
Final answer:
The response identifies issues in the experimental design of Ruby and Mary's sleepiness experiment, highlighting the need for clear definitions, measurement methods, and analytical approaches. Each step of the experimental design lacks specificity for effective execution. Ensuring testable hypotheses and proper analysis techniques are emphasized as critical for valid results.
Explanation:
Identifying Issues in Experimental Design
This activity revolves around hypotheses and the structure of an experiment. Below are the observations and suggestions regarding the steps of the experiment as it pertains to Ruby and Mary's SLEEPINESS EXPERIMENT.
10. First Step of the Experimental Design
The first step typically involves stating a problem or observing a phenomenon. In this case, the lack of a defined method to measure sleepiness or specific criteria for what constitutes feeling sleepy is a major oversight.
11. Second Step of the Experimental Design
The second step usually requires formulating a testable hypothesis. However, the explanation does not specify how each hypothesis can be tested experimentally or what parameters need to be defined for testing.
12. Steps 3 and 4
These steps should outline the methodology and materials used in the experiment. It is unclear what tools will be used for measuring variables such as classroom temperature or engagement, and there is no mention of how control variables will be maintained.
13. Step 6
In the final steps of an experiment, one should evaluate data and draw conclusions. There is ambiguity regarding how the data will be analyzed—specifically, what statistical methods may be employed to ascertain whether the results support the hypotheses.
In summary, careful consideration and specification of measurement methods, hypothesis testing, and data analysis are crucial for a well-designed experiment that seeks to understand factors affecting sleepiness during the twins' science class.
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