Final answer:
Sentences 2 ("The subjects are the 75 juniors") and 5 ("One of the treatments is individual tutoring") correctly identify components of the experiments mentioned. An experiment typically includes components like population, sample, experimental units, explanatory variable, treatments, and a response variable, with elements like blinding and placebos crucial for a reliable outcome.
Step-by-step explanation:
The sentences that correctly identify the components of the experiment stated in the provided scenarios are sentence 2 "The subjects are the 75 juniors," and sentence 5 "One of the treatments is individual tutoring." The other sentences either do not correspond to the information given or there is not enough context to confirm their accuracy.
The components of an experiment typically include the population, sample, experimental units, explanatory variable, response variable, and treatments. For the psychologist's study, the population would be all college students, the sample is the 100 college students participating, the experimental units are the individual college students, the explanatory variable is the size of tableware, the treatment is the use of either normal-sized or 20 percent smaller tableware, and the response variable is the amount of food consumed.
Lastly, when designing an experiment, elements such as blinding, placebos, and control groups are essential to minimize the influence of lurking variables and suggestion, ensuring valid and reliable results.