Securing Higher Grades Costing Your Pocket? Book Your Assignment at The Lowest Price Now!
loader

Phone no. Missing!

Enter phone no. to receive critical updates and urgent messages !

Add File

Error goes here

Files Missing!

Please upload all relevant files for quick & complete assistance.

Guaranteed Higher Grade!

401077 Introduction To Biostatistics

tag 0 Download 5 Pages / 1,063 Words tag 12-07-2021

Question:

Research question: Does the average minutes of moderate to vigorous physical activity (MVPA)differ between overweight and non-overweight University students

Use the assignment data set assigned to you: Variables to analyse: ‘MVPA’and ‘overweight’Note: Each student will get different answers as the data sets differ.

  1. Draw histograms of MVPA by overweight status.Add reasonable axis labels. 
  2. Name the statistical test you would you use to address the above research question using the data set provided. Explain why this test is appropriate.
  3. Answer the research question by conducting your chosen statistical test on the data set provided. Please use R Commander but format your answer following the 5 step method.

Consider the research question “Is the mean weight of Australian university students heavier at graduation than at enrolment?”Suppose the following data was collected to address this hypothesis.

student ID

weight at enrolment (kgs)

weight at graduation (kgs)

1

86

89

2

64

73

3

51

55

4

73

72

5

63

80

6

69

70

Identify the most appropriate statistical test for addressing theresearch question using the given data. Explain why this test is appropriate.(Note: Please do not run any analyses or conduct the statistical test.)

Research question: How different are theaverage GPAsof overweight and non-overweight Australian University students

Use the assignment data set assigned to you: Variables to analyse: ‘GPA’ and ‘overweight’

Note: Each student will get different answers as the data sets differ.

  1. Using R Commander, calculate the 95% confidence interval for the difference in mean GPA between the overweight and non-overweight groups. 
  1. Carefully write in words, what this confidence interval is telling us.
  2. From the results in a) can we conclude that there a statistically significant difference in mean GPA between overweight and non-overweight Australian university students Explain why or why not. 

Estimate the minimum sample size required to detect a difference of 0.5in mean GPA between the overweight and non-overweight retirees with and power=0.80 . (That is, this difference could be between 4 and 4.5 or between 4.5 and 5.0. You can choose any means as long as they are 0.5 apart.) Assume the population standard deviation is and equal group sizes. Present your answer as a sentence which summarises the required sample size to achieve what power subject to what conditions.

Research question: Does the proportion of overweight students differ by sex in the population of Australian university students

Use the assignment data set assigned to you: Variables to analyse: ‘overweight’ and ‘sex’

Note: Each student will get different answers as the data sets differ.

  1. Show the relationship between overweight and sex using a two way contingency table. Include either row or column percentages.Type and label the table yourself:an R Commander screenshot will not be accepted.
  1. Looking at the results in part a) only, is there any evidence of association between sex and overweight status in this sampleof Australian university students Explain why or why not.
  2. Are the requirements for a Chi-square test met Explain why. 
  3. Irrespective of your answer in part c) address the research question using a Chi-square test on the provided data.Please use R Commander but format your answer following the 5 step method

Estimate the minimum sample size required to produce a 95% confidence interval with a margin of error of  for the proportion ofAustralia university students. Assume that 40% of this population will be overweight. Present your answer as a sentence which summarises the required sample size to achieve what confidence level subject to what conditions.

Download Sample Now

Earn back the money you have spent on the downloaded sample by uploading a unique assignment/study material/research material you have. After we assess the authenticity of the uploaded content, you will get 100% money back in your wallet within 7 days.

Upload
Unique Document

Document
Under Evaluation

Get Money
into Your Wallet

Total 5 pages

Cite This Work

To export a reference to this article please select a referencing stye below:

My Assignment Help. (2021). 401077 Introduction To Biostatistics. Retrieved from https://myassignmenthelp.com/free-samples/401077-introduction-to-biostatistics/source-dataset.html.

"401077 Introduction To Biostatistics." My Assignment Help, 2021, https://myassignmenthelp.com/free-samples/401077-introduction-to-biostatistics/source-dataset.html.

My Assignment Help (2021) 401077 Introduction To Biostatistics [Online]. Available from: https://myassignmenthelp.com/free-samples/401077-introduction-to-biostatistics/source-dataset.html
[Accessed 02 February 2023].

My Assignment Help. '401077 Introduction To Biostatistics' (My Assignment Help, 2021) <https://myassignmenthelp.com/free-samples/401077-introduction-to-biostatistics/source-dataset.html> accessed 02 February 2023.

My Assignment Help. 401077 Introduction To Biostatistics [Internet]. My Assignment Help. 2021 [cited 02 February 2023]. Available from: https://myassignmenthelp.com/free-samples/401077-introduction-to-biostatistics/source-dataset.html.


Stuck on Any Question

Our best expert will help you with the answer of your question with best explanation.

question
We will use e-mail only for:

arrow Communication regarding your orders

arrow To send you invoices, and other billing info

arrow To provide you with information of offers and other benefits

Phone no. Missing!

Enter phone no. to receive critical updates and urgent messages !

loader
250 words
Error goes here

Error goes here

Files Missing!

Please upload all relevant files for quick & complete assistance.

We Can Help!

Get top notch assistance from our best tutors !
Excel in your academics & career in one easy click!

icon

Other Samples

Content Removal Request

If you are the original writer of this content and no longer wish to have your work published on Myassignmenthelp.com then please raise the content removal request.

icon

5% Cashback

On APP - grab it while it lasts!

Download app now (or) Scan the QR code

*Offer eligible for first 3 orders ordered through app!

screener
ribbon
callback request mobile
Have any Query?
close
Subtraction Payment required!

Only one step away from your solution of order no.