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Your assignment will be assessed on the following: Whether or not your answer is correct Whether or not graphs and tables are appropriately formatted and labelled Whether or not you show working when...

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Your assignment will be assessed on the following:


  • Whether or not your answer is correct
  • Whether or not graphs and tables are appropriately formatted and labelled
  • Whether or not you show working when requested and whether this working is correct and sufficient
  • Whether or not you provide explanation or justification when requested and whether or not these explanations are correct and sufficient

Please avoid pasting screenshots of R Commander output into your assignment (graphs are fine). Raw output does not identify the answer to the question. Where ever possible present your answer as a sentence or paragraph.

Answered Same Day Apr 27, 2020

Solution

Abr Writing answered on Apr 29 2020
138 Votes
Note: Each student will get different answers as the data sets differ.
Question 1 (5 marks)
A random sample of 10 former University of Eastern Sydney students was ask whether they drink more or less since they graduated from University. Their answers were:
more, less, less, less, more, less, less, less, less, more
Conduct a sign test to see whether or not this provides evidence of a change in drinking habits of the wider population of graduates from University of Eastern Sydney. Use the 5-step method and show all working. Use the Table 6 from the textbook (below) to determine the decision rule or use R Commander to calculate the p-value.
Question 2 (3 marks)
Research question: What is the mean well-being (WEMWBS) score for University of Eastern Sydney Students?
Using the University of Eastern Sydney data set assigned to you and R Commander:
a. Calculate the 95% confidence interval for the mean well-being (WEMWBS) score in this population. (1 mark)
The 95% confidence interval for the mean well-being (WEMWBS) score in this population is (43.59292, 44.53309).
. Write a sentence which answers the research question above as fully as possible. (2 marks).
We are 95% confident that the population mean of well-being (WEMWBS) score will be between 43.59292 and 44.53309.
This research question applies to questions 3 and 4
Research question: Among University of Eastern Sydney students, do self-reporting drug users (variable: drug) have lower well-being scores (variable: WEMWBS) than non-users?
Question 3 (7 marks)
a. Would you address this research question with a one-tailed hypothesis test or a two-tailed hypothesis test? Explain why. (1 mark)
This research question is with a one-tailed hypothesis test.
. Write the null and alternate hypotheses for a parametric hypothesis test, fully defining any symbols which you use. (2 marks)
Let µ1 be the population mean of well-being scores (variable: WEMWBS) of self-reporting drug users...
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