MNS
205 Final Quiz No. 4 All Questions are 3 points each
Name:
_______________ Date:
_____06/01/15______
Yellow
highlight your chosen response and include your Name in the File name.
Due
Noon Tuesday via reply email.
1)
An
example of Uniform Probability Distribution is the probability resulting from
rolling a six-sided balanced die.
a)
True
b)
False
2) The properties of a
binomial experiment and hence the binomial distribution include:
a) There is a sequence of n identical trials
b) Two outcomes, success or failure, are possible
on each trial
c) The probability of success, denoted by p, does not change from trial to trial
d) The trials are independent
e)
All of the above
3) With a full deck of cards for
a specific trial, theprobability of success p, is based on drawing an ACE. What is
the probability of failure?
a)
1/13
b)
1/4
c) 12/13
d)
0.24
e)
None of the above
4)
By
replacing the card in the desk of cards for each trial, three consecutive
trials resulted in drawing an ACE each time. What is the probability of not
drawing an ACE in the fourth trial?
a)
1/13
b)
1/28,561
c) 12/13
d)
0.726
e)
None of the above
5)
The
normal probability distribution is defined by its mean µ and its ______?
a)
Variation
?2
b) Standard Deviation?
c)
Median
d)
Mode
6)
For
a normal standard distribution, the area under the curve to the left of the
mean is:
a)
0.9544
b)
0.6826
c)
100%
d) 0.5
7)
For
a normal standard distribution, the area under the curve within + / – 1
standard deviation of the mean is:
a)
0.9544
b) 0.6826
c)
2/3
d)
0.5
8) For a normal standard
distribution, P(z? -1.44) =
a) 0.4251
b) 0.9251
c)
0.5749
d) 0.0749
9) For a normal standard
distribution, P(z? -1.44) =
a) 0.4251
b) 0.9251
c) 0.5749
d)
0.0749
10)For a normal standard
distribution, P(-1.44 ? z? 1.03) =
a)
0.7736
b) 0.3485
c) 0.4251
d) 0.8485
11)For a normal standard
distribution, P(z? -3.0) =
a) 0.0028
b) 0.9972
c) 0.0026
d)
0.0013
12)For a system of two linear
equations in a plane, which of the following is true?
a) If there is one solution,
the system is consistent and independent
b) If there is no solution, the
system is inconsistent
c) If there are an infinite
number of solutions, the system is consistent and dependent
d)
All of the above
13)For solving a system of
linear equations, which method is the most visual, but not the most
accurate?
a)
Graphing
b) Substitution
c) Elimination
d) Addition
14)For a system of two linear
equations, if the slope of each of the lines is the same, but the y-intercept
is different, then:
a) There is no solution
b)
The lines are parallel
c) The system is inconsistent
d) All of the above
15)For a system of two linear
equations, if the slope of each of the lines is the same, and the y-intercept
is the same, then:
a) There is no solution
b)
There are an infinite number of
solutions
c) The system is consistent
d) The system is dependent
e) b, c and d only
16)Solve the following system
of linear equations: 3x – 6y = -9 -2x + 4y = 12
a) (0 , 3)
b) (3 , 0)
c) Infinite number of solutions
d) No solution
e) None of the above
17)Solve the following system
of linear equations: 3x – 6y = -18 -2x + 4y = 12
a) (0 , 3)
b) (3 , 0)
c) Infinite number of
solutions
d)
No solution
e)
None
of the above
18)Solve the following system
of linear equations: 3x – 6y = -18 2x + 4y = 12
a)
(0 , 3)
b) (3 , 0)
c) Infinite number of
solutions
d) No solution
e)
None
of the above
19)
The
system of linear equations of #18 above can be described as
a) Consistent and independent
b)
Inconsistent
c)
Consistent
and dependent
d)
None
of the above
20)
Which
of the following is the desired end matrix for the Gauss-Jordan elimination
solution?
a) Desired end matrix
b)
c)
d)
|
|
O |
O |
|
O |
X |
O |
|
O |
O |
X |
XQuestions
21, 22 and 23 are all extra credit for 3 points each. Solve the following using
Gauss-Jordan elimination.
3x1+ 5x2– x3
= -7
x1+ x2+ x3 = -1
2x1+ +11x3 = 7
21)
x1
=
a) -2
b)
-1
c)
0
d)
1
e)
2
22)
X2
=
a)
-2
b)
-1
c) 0
d)
1
e)
2
23)
X3
=
a)
-2
b)
-1
c)
0
d) 1
e)
2
Thanks Everyone for a Great Class!!!!
