PUBH 6033—Week 7 Assignment 1
Comparing two means: When drink drove a Student to statistics
(Rubric included)
For this assignment, you review this week’s Learning Resources and then perform a two-sample independent t-test and an ANOVA related to the dataset that was utilized in the week 2 SPSS application assignment. Import the data into SPSS; or, if you correctly saved the data file in week 2, you may open and use that saved file to complete this assignment. Type your answers to all questions directly into the worksheet, and paste the required output at the end of this document.
Submit this Application Assignment by Day 7.
———————————————————————————————————————
A study was conducted to determine if a walking plus strength training exercise program results in a significantly greater increase in aerobic capacity as compared to a walking only exercise program. Participants are randomly selected and then randomly assigned to one of the exercise groups. Participants’ aerobic endurancewas assessed at the beginning of the study and, again, after 6-months of exercise.
Coding for study variables:
· AGE—age in years
· SEX—1 =male, 2=female
· EXERCISE—1= walking and strength training; 2 = walking;
· CHNG_ENDUR—change in maximal oxygen uptake (liters per minute)from pre-test to post-test
———————————————————————————————————————
Note: Save all of your SPSS output. You will paste copies in steps 7-9, below.
Step 1:Review this week’s Learning Resources.
Step 2: Import the Microsoft Excel data file provided in this week’s learning resources into SPSS (or open saved file from week 2 application assignment).
Step 3:Run and save the Codebook for your SPSS data file
Step 4: Conduct an independent samples t-test to determine if there is a difference between the exercise type 1 and 2 in terms of changes in maximal oxygen uptake. Note that the independent variable is EXERCISE, and the dependent variable is CHNG_ENDUR.For this analysis, choose a two-tailed test of significance.
Step 5: Conduct a between-subjects ANOVA to determine if there is a difference between sex (males vs. females) and CHNG_ENDUR. Note that the independent variable is SEX, and the dependent variable is CHNG_ENDUR. For this analysis, choose a two-tailed test of significance.
Step 6: Review your SPSS output and answer each of the following questions:
QUESTION
type answers below
Score (to be entered by instructor)
From the independent samples t-test output:
1. What is the mean CHNG_ENDUR for group 1?
/3points
2. What is the CHNG_ ENDUR standard deviation for group 1?
/ 3 points
3. What is the mean CHNG_ENDUR for group 2?
/ 3 points
4. What is the CHNG_ ENDUR standard deviation for group 2?
/ 3 points
5. What is the value of the t-statistic (equal variances assumed)?
/ 3 points
6. What is the probability that the obtained t-statistic was simply due to chance as opposed to actual exercise type differences [see “Sig (two-tailed)” on output]?
/ 3 points
7. Are the results statistically significant at alpha = 0.05 (yes or no)?
/ 3 points
8. Based on the results, do you reject or fail to reject the null hypothesis?
/ 3 points
From the ANOVA output:
9. What is the mean CHNG_ENDUR for males?
/ 3 points
10. What is the CHNG_ENDUR standard deviation for males?
/ 3 points
11. What is the mean CHNG_ENDUR for females?
/ 3 points
12. What is the CHNG_ENDUR standard deviation for females?
/ 3 points
13. What is the calculated F-value?
/ 3 points
14. What is the probability (noted as “Sig” on output) that the obtained F-value was simply due to chance as opposed to actual gender differences?
/ 3 points
Step 7: Paste the SPSS Codebook output below.
Step 8: Paste the independent samples t-test outputbelow.
Step 9: Paste the ANOVA output below.
Section below (scoring) is to be completed by Instructor
Scoring Rubric for week 2 assignment1—Hands on SPSS(60 points)
Timeliness
Fully Met
Partially Met/Good
Partially Met/Fair
Not Met
Timeliness Indicators
Posted by the deadline
Posted 1 day late
Posted 2-4 days late
Posted five or more days late
Grade impact
No impact
10% reduction in overall assignment score
20% reduction in overall assignment score
0 points
Questions
14 questions (worth 3points each)
____ / 42 points possible
SPSS Output
Three SPSS outputs (6 points each) ____ / 18 points possible
Initial Score (60 possible points):
Timeliness Factor (late points deducted):
Total Score (60 possible points):
Instructor comments:
54304%�#oc
They have a magnificent team. These people are always kind and willing to listen to your concerns or issues. Better yet, your assignment is always ready before the time, they usually send you a draft to double-check before they finalize your paper.
Delivering a high-quality product at a reasonable price is not enough anymore.
That’s why we have developed 5 beneficial guarantees that will make your experience with our service enjoyable, easy, and safe.
You have to be 100% sure of the quality of your product to give a money-back guarantee. This describes us perfectly. Make sure that this guarantee is totally transparent.
Read moreEach paper is composed from scratch, according to your instructions. It is then checked by our plagiarism-detection software. There is no gap where plagiarism could squeeze in.
Read moreThanks to our free revisions, there is no way for you to be unsatisfied. We will work on your paper until you are completely happy with the result.
Read moreYour email is safe, as we store it according to international data protection rules. Your bank details are secure, as we use only reliable payment systems.
Read moreBy sending us your money, you buy the service we provide. Check out our terms and conditions if you prefer business talks to be laid out in official language.
Read more