TAKEHOME ASSIGNMENT # 6
NAME
Kim, Mo Se
GRADE
/ 100
1.
Please put your name in the space above.
2.
All assignments must be done using MICROSOFT OFFICE WORD.
3.
Tables and graphs can be copied from your CLASS NOTES or EXCEL and
pasted directly into this file
or
you can work directly in this form.
4.
If pasting, paste all your work where indicated
AFTER EACH QUESTION.
5.
DO NOT ELIMINATE THE TABLES HERE.
6.
When you save your work, please remember to rename the TH file by adding your
last and first name.
For example
: TH6NormanStandard
7.
Submit this assignment into TH6 assignment folder by MIDNIGHT SUNDAY.
Class Notes Problems
using the histograms below.
1
What is the probability of selecting 1, 3 or 5?
3/5
2
What is the probability of NOT selecting 1,3 or 5?
2/5
3
What is the probability of selecting 3 or 4?
2/5
4
What is the probability of selecting 3?
1/5
5
What is the probability of NOT selecting 3?
4/5
Paste your answer here:
(5 points)
P(1 or 3 or 5)
1/5
0
1
2
3
4
5
P(3 or 4)
1/5
0
1
2
3
4
5
P(3)
1/5
0
1
2
3
4
5
AREA AND PROBABLITY USING Z SCORES AND TABLE A2
When you do problems using z scores it is very important to actually draw the bell curve and locate the
area you are trying to find.
It is not practical to have you create these bell curves online for me to see
how you are finding your results, but you still need to do them! If you do NOT do this, the probability
of making errors increases dramatically!
Check your solutions manual for examples.
Z score
Area and Percent
z < 2.22
0.9861,
98.61%
z > 2.22
.0139
1/39%
0<z<2.22
1
100%
Paste your answer here: (3 points)
1
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+
zscore
Area
%

zscore
Area
%
z = 1.23
0.8907
89.07%
z = 1.23
0.1093
10.93%
z = 0.18
0.5714
57.14%
z = 1.18
.1190
11.9%
z = 2.20
0.9861
98.61%
z = 1.64
.0505
5.05%
z = 3.13
0.9991
99.91%
z = 3.13
.0009
0.09%
z = 3.50
0.9999
99.99%
z = 0.89
.1867
18.67%
Paste your answer here: (4 points)
Using TABLE a2, find the zscores using the area. (Don’t forget the – sign!)

zscore
Area
%
+
zscore
Area
%
z = 3.40 – 3.48
0.0003
0.03%
z = 0.04
0.5160
51.60%
z =  1.84
0.0329
3.29%
z = 0.72
0.7642
76.42%
z =
1.35
0.0885
8.85%
z = 2.41
0.9920
99.20%
z = 0.39
0.3483
34.93%
z = 3.33 – 3.38
0.9996
99.96%
Paste your answer here: (4 points)
AREA BETWEEN NEGATIVE AND POSTIVE Z SCORES
From class notes:
Step
Find P (2.43< z < 2.43)
Show all your work
1
Area of positive z (From Table A2)
.9925
2
Area of negative z (From Table A2)
.0075
3
Difference between positive z and 0
.9925  .5 = .4925
4
Difference between negative z and 0
.5  .0075 = .4925
5
Sum of the differences
.985
P (2.43 < z < 2.43) = %
98.5%
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 Spring '09
 MoSeKim
 Standard Deviation, table a2

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