Scenario and answer | Psychology homework help

For this task, you will read each research scenario and answer the questions regarding each one.

Research Scenario 1
A researcher is interested in the  effects of a new weight loss supplement. Participants in this  double-blind study are randomly assigned to either a group that receives  the new supplement or a group that receives a placebo. Participants are  weighed before starting the program. After 6 weeks of taking either the  new supplement or the placebo, participants return to the lab to be  weighed.

  • Provide the appropriate null and alternative hypotheses.
  • Determine which type of analysis would be appropriate to answer this  research question. Be specific and support your answer using the  textbook or other course materials.
  • Name the independent and dependent variables used in the analysis. What are the levels of the independent variable?
  • Indicate the levels of measurement for each variable.
  • Describe the Type I error for this study.
  • Describe the Type II error for this study.

Research Scenario 2
A researcher is interested in whether  certain memory strategies help people to remember information. This  researcher employs students from a local college, and then randomly  assigns them to one of three groups—the visualization group, the  mnemonic technique group, and the rote repetition group. Participants in  each group receive an hour of instruction regarding how to use the  particular technique to remember lists of words. After the instruction,  all participants are presented with a list of 60 words that they are  instructed to remember. The words are presented one-at-a time on a  computer screen. After the last word is presented, all participants are  instructed to recall as many words as possible by writing them on a  blank sheet of paper. All participants are given 10 minutes to recall  the words.

  • Provide the appropriate null and alternative hypotheses.
  • Indicate which type of analysis would be appropriate to answer this  research question. Be specific and support your answer using the  textbook or other course materials.
  • Name the independent and dependent variables used in the analysis. What are the levels of the independent variable?
  • Indicate the levels of measurement for each variable.
  • Describe the Type I error for this study.
  • Describe the Type II error for this study

Research Scenario 3
A local manufacturing company is  interested in determining whether their employees are as happy with  their jobs as other employees. The manufacturing company asked the  workers, who volunteered to participate, to rate their happiness at work  on a scale from 1 to 10 where 1 was not at all happy and 10 was  extremely happy. The manufacturing company found that the mean happiness  rating for their employees is 7.3. In the general population of workers  in the United States, the mean happiness rating is 6.

  • Provide the appropriate null and alternative hypotheses.
  • Determine which type of analysis would be appropriate to answer this  research question. Be specific. Please support your answer using the  textbook or other course materials.
  • Name the variables used in the analysis.
  • What are the levels of measurement for each variable?
  • Describe the Type I error for this study.
  • Describe the Type II error for this study

Length: 1-2 pages

Your paper should demonstrate thoughtful  consideration of the ideas and concepts presented in the course by  providing new thoughts and insights relating directly to this topic.  Your response should reflect scholarly writing and current APA standard

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