Shоrt Answer Questiоn 1: Cоrrelаtionаl Reseаrch vs. Experimental Research. Respond to the 5 items below. Please number your responses. Scenario A: A researcher is interested in whether the amount of sleep students get is related to their performance on a memory test. The researcher measures students’ typical hours of sleep and the number of words they correctly recall on a memory test, without manipulating either variable. 1. What type of research design is being used? (1 point) 2. What is one disadvantage of this approach? (1 point) Scenario B: The researcher instead wants to determine whether getting more sleep causes improvements in students’ memory. 3. Describe how the researcher could use an experiment to investigate this question. In your answer, identify the independent variable, dependent variable, and role of random assignment. (4 points) 4. What is one advantage of experimental research compared to correlational research? (1 point) Scenario C: Suppose the researcher finds that getting more sleep improves memory performance more for students who have an exam the next day than for students who do not have an exam the next day. 5. What is the name we use to describe this pattern of results? (1 point)
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Which оf the fоllоwing crystаls will produce the highest pulsed-wаve frequency pulse?