STAT 208-021
Focus Exercises
4. In this scenario, a P-value less than 0.05 means that if church attenders were no more ethnocentric than
nonattenders, then the outcome observed for this sample would occur in less than 5% (less than 1 out of 20)
instances.
STAT 208-021
Focus Exercises
Chapter 22A:
4. Researchers found that the percentage of ethnocentric was higher among church attenders
compared with the same percentage for non-attenders. In fact the evidence for that was so
extreme that if there was no dif
Chapter 1: Columbus, The Indians, and Human Progress
In school I leaned that Christopher Columbus was an italian explorer, navigator, and colonizer.
Columbus completed four voyages across the Atlantic Ocean. He was determined to find a direct
water route
12. Let R be the rectangle 0 g x g In 2, 0 g y g ln 2.
Compute U exy dA.
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December 10, 2013
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4. (25 pts.) Suppose D is the cylinder whose base is
the unit circle on the xy-plane, and whose top lies
on the plane 2 = 2.
2
Compute the integral 11223 dV. K1; '
i
D
(Use cylindrical coordinates.)
X 3059251
SSWW sif';
cfw_ -zszJ
D JUJWJ
:Smg 82.? MM 02
Aviance Hawkes
STAT 208-021
Focus Exercise Rewrite
Chapter 5
3. This is an observational study: it is not an experiment because the subjects were not assigned to the
different testing groups (year SAT was taken). The explanatory variable is the number of
Aviance Hawkes
STAT 208-021
Focus Exercise Rewrite
Chapter 3
3.6
The bold face number 32 is a statistic
The bold face number 34% is a parameter
3.12
a. About 59.98% (^p= 607/1012=0.5998) of the sample are satisfied with the total cost they pay for their
h
Aviance Hawkes
STAT 208-021
STAT 208 FOCUS EXERCISES
Chapter 1:
1.4
a. Gomes, Jonny
Beckett, Josh
Sabathia, C. C.
Rodriguez, Alex
b. The data contains 4 variables. Variables that take numerical values are the Age and Salary
c. Percentage
1.8
No, its an ob
Aviance Hawkes
Stat 208-021
Focus Exercises Rewrite
Chapter 1
1.4
a. Gomes, Jonny
Beckett, Josh
Sabathia, C. C.
Rodriguez, Alex
b. The data contains 4 variables. Variables that take numerical values are the Age and Salary
c. Age is measured in years, and
Focus Exercise Rewrite
Chapter 10
6. This graph is misleading because the cones used to represent each interest rate are scaled both
horizontally and vertically, they suffer from the pictogram defect [The width of each cone should be the
same]
10. a. 15.4
Focus Exercises
Chapter 14
8. The association is roughly linear and positive (high calories tend to go with high sodium, and
low tends to go with low). Point A is a hot dog brand which is well below average in both
calories and sodium.
12. The correlation
Focused Exercise
Chapter 13
12. a. They fall between the range of 330 and 342 days.
b. About 15.87% of horse pregnancies will be less than 333 days.
14. a. Sarah: [130-110]/15=4/3=1.333.
her mother[115-90]/15=5/3=1.666
b. Sarahs mother scored higher relat
Aviance Hawkes
UNIV 111
Belle Isle Journal
While visiting Belle Isle today I discovered more information
than ever, more actually from the reading I received in class.
Information like what occurred on the grounds, who stepped foot,
and reasoning of why s
Aviance Hawkes
STAT 208-021
Focus Exercises
Chapter 3
3.6
The bold face number 32 is a statistic
The bold face number 34% is a parameter
3.12
a.The value of the sample proportion is p-hate=607/1012
b. The population parameter= adults who are satisfied wit