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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...

Your assignment will be assessed on the following:

• 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
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 Âµ1 be the population mean of well-being scores (variable: WEMWBS) of self-reporting drug users...
SOLUTION.PDF