STAT 3600 - 002
Fall 2015
Exam 2
Instructions:
This test consists of 4 questions. Please answer all questions to the best of your ability. Be as concise as
possible no points for random babbling. Be sure to show your work for the problems.
For the exam:
R
Test 3B
STAT3600
1(35 Points).
Fall 2009
Maghsoodloo
The distribution of time to failure of an electrical component is
given by f(x) = 0.18 + bx, 800 x 900 hours, where f(900) = 0. (a) Compute the
constant b over the range space [800, 900 hours] such that
Test 3A
STAT3600
1(35 Points).
Fall 2009
Maghsoodloo
The distribution of time to failure of an electrical component is
given by f(x) = 0.16 + bx, 700 x 800 hours, where f(800) = 0. Compute the constant
b over the range space [700, 800] such that f(x) is a
Test 2(B)
STAT 3600
Fall 2009
Maghsoodloo
1(20 Points). Suppose that 27% (p = 0.27) of all drivers in Alabama receive at
least one driving citation per year. (a) Compute the Pr that exactly 4 of the 18 randomly
selected drivers receive at least one citati
Test 2(A)
STAT 3600
Fall 2009
Maghsoodloo
1(35 Points). The discrete random variable, X, represents the number of times that a
network system is down during any one month. From past data, it has been determined that the
pmf (probability mass function) of
Test 1
STAT 3600
Fall 2011
Maghsoodloo
1(35 Points). The following data give the Bond Strength of concrete : 3.8, 4.2,
5.7, 7.0, 7.6, 8.2, 8.9, 8.9, 10.7, 11.5, 12.1, 12.6, 13.1, 13.4, 14.1, 14.2, 14.9. (a)
Determine the values of sample size n, the range
Final Exam(B)
STAT 3600
Fall 2009
Maghsoodloo
1(30 Points). An inventory manager has accumulated records of demand
for her company's certain product over the last year. The rv, X1, represents the
number orders per day and the rv, X2, represents the number
Final Exam(A)
STAT 3600
Fall 2009
Maghsoodloo
1(30 Points). An inventory manager has accumulated records of demand
for her company's certain product over the last year. The rv, X1, represents the
number orders per day and the rv, X2, represents the number
CHAPTER 6
Section 6.1
1.
a.
x = 8.1407
~ = 7 .7
x
b.
c.
s = 1.660
d.
= .1481
p
e.
s
= .2039
x
a.
= .50 .
p
b.
= .80
p
a.
x = 1.3481
b.
c.
x = 1.3481 .
+ ( 1.28 ) .
d.
P( X < 1.5) = .6736
2.
3.
e.
s
n
= .0846
4.
a.
.434
b.
s X Y = .5687 .
c.
s1
.7890
s
STAT 3600 - 002
Fall 2015
Exam 1
Instructions:
This test consists of 5 questions. Please answer all questions to the best of your ability. Be as concise as
possible no points for random babbling. Be sure to show your work for the problems.
For the exam:
R