Each Question is worth 4 points.
Problems 1-2. Identify whether it is an Observational study or an Experimental study.
7{ Changing a work environment to see if production would increase or decrease.
(A) Experimental bservational
2. A research study compar
STAT 2510 Exam 1
Sec: ( D 0
Name:
Q1) Identify each of these variables as categorical or quantitative.
1. Political Philosophy: liberal, moderate, conservative.
ategorical (B) quantitative \/
2. Zip Codes:
L
3. Choice of Accommodation: house/mm, apartmen
STAT2510 Practice Exam 1
Problems 1-4. At a clinic the following variables are recorded for each patient: weight,
blood type, blood pressure, and gender. Identify each of these variables as categorical
or quantitative.
1.weight: (A categorical B uantitati
The following formulas may be helpful: \V
o IfX~B(n,p), then X =np and 0X : (/np wp)
- IfX~B(n,p) and 13 = X/n, then
p(1 N 29)
[1,13 = p and a}; =
n
. izpandagza/
c two-sided condence interval:
3
iim where m = t*
(/5
0 test statistic for t-test:
T: s/
P
STAT2510 Practice Exam 3 Name:
The following formulas may be helpful:
s IfX~ B(n,p), then px =np and ax : /np(1 p)
o IfX~ B(n,p) and f3 =X/n, then
12(1 - p)
#13:; and 01;: n
o p5=pand05=a/
o two-sided condence interval:
_ s
azzl: m where m = t*
ya
- test
STAT2510 Practice Exam 2
Name: I l( f f 51:
Problems 1-2. Read each brief report of statistical research and identify whether it is an
observational study or an experiment.
1.
Brain scans revealed that older people walking between six and nine miles a wee