1. Performing a One-Sample t-Test
The data in STAT1.NormTemp come from an article in the Journal of Statistics Education by Dr. Allen L. Shoemaker from the Psychology Department at Calvin College. The data are based on an article in a 1992 edition of JAMA (Journal of the American Medical Association), which questions the notion that the true mean body temperature is 98.6. There are 65 males and 65 females. There is also some question about whether mean body temperatures for women are the same as for men. The variables in the data set are as follows:
ID Identification number
BodyTemp Body temperature (degrees Fahrenheit)
Gender Coded (Male, Female)
HeartRate Heart rate (beats per minute)
a. Look at the distribution of the continuous variables in the data set using PROC UNIVARIATE, including producing histograms and insets with means, standard deviations and sample size.
b. Perform a one-sample t-test to determine whether the mean of body temperatures (the variable BodyTemp in STAT1.NormTemp) is 98.6. Produce a confidence interval plot of BodyTemp with the value 98.6 used as a reference.
1) What is the value of the t statistic and the corresponding p-value?
2) Do you reject or fail to reject the null hypothesis at the 0.05 level that the average temperature
2. Using PROC TTEST for Comparing Groups
Elli Sagerman, a Masters of Education candidate in German Education at the University of North Carolina at Chapel Hill in 2000, collected data for a study. She looked at the effectiveness of a new type of foreign language teaching technique on grammar skills. She selected 30 students to receive tutoring; 15 received the new type of training during the tutorials and 15 received standard tutoring. Two students moved away from the district before completing the study. Scores on a standardized German grammar test were recorded immediately before the 12-week tutorials and then again 12 weeks later at the end of the trial. Sagerman wanted to see the effect of the new technique on grammar skills. The data are in the STAT1.GERMAN data set.
Change Change in grammar test scores
Group The assigned treatment, coded Treatment and Control
Analyze the data using PROC TTEST. Assess whether the treatment group improved more than the control group.
a. Do the two groups appear to be approximately normally distributed?
b. Do the two groups have approximately equal variances?
c. Does the new teaching technique seem to result in significantly different change scores compared with the standard technique?
-
GET SOLUTION FOR THIS ASSIGNMENT
TO BE RE-WRITTEN FROM THE SCRATCH
- Original and non-plagiarized custom papers. Our writers develop their writing from scratch unless you request them to rewrite, edit or proofread your paper.
- Timely Delivery. capitalessaywriting.com believes in beating the deadlines that our customers have imposed because we understand how important it is.
- Customer satisfaction. Customer satisfaction. We have an outstanding customer care team that is always ready and willing to listen to you, collect your instructions and make sure that your custom writing needs are satisfied
- Privacy and safety. It’s secure to place an order at capitalessaywriting.com We won’t reveal your private information to anyone else.
- Writing services provided by experts. Looking for expert essay writers, thesis and dissertation writers, personal statement writers, or writers to provide any other kind of custom writing service?
- Enjoy our bonus services. You can make a free inquiry before placing and your order and paying this way, you know just how much you will pay. standard deviations and sample size
- Premium papers. We provide the highest quality papers in the writing industry. Our company only employs specialized professional writers who take pride in satisfying the needs of our huge client base by offering them premium writing services.
Get Professionally Written Papers From The Writing Experts
