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FINAL EXAM.:
STAT 230
Summer, 2008
Name
:………………………………………….
Circle Section:
1
2
7
3
5
I.D.
:…………………………………………….
For corrector only
Grade of Written
Part
Grade of Multiple Choice
Final
Exam.
Grade
1.
2
3
Number of Correct:…….x
4=……….
PART ONE
:
MULTIPLE CHOICE(No Penalty).
Circle your answer. Use E when the
answer is not any of the given options. For each question answered correctly you
get 4 points. Answers in decimal fraction form are rounded.
•
If
Y
is b(200,0.4), give a lower bound for
)
05
.
0
4
.
0
200
(
<

Y
P
.
A.
0.580
B.
0.520
C.
0.625
D.
0.820
E.
•
Let X and Y be independent random variables having the same uniform
distribution U(0,2).
Find P( XY < 1/2).
A.
23/32
B.
47/72
C.
79/128
D.
119/200
E.
•
If X is N(10,25), find P(0.025 < (X10)
2
< 0.100).
A.
0.095
B.
0.075
C.
0.05
D.
0.025
E.
•
Single digits, randomly produced by a computer, are recorded in order. Find
the probability that the third 5 appears at the ninth position.
A.
0.019
B.
0.017
C.
0.015
D.
0.021
E.
•
Single digits, randomly produced by a computer, are recorded in order. Find
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This note was uploaded on 03/01/2010 for the course STAT 230 taught by Professor Variousteachers during the Spring '10 term at American University of Beirut.
 Spring '10
 VariousTeachers
 Statistics, Probability

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