Worksheetseasy
Total questions: 20
Worksheet time: 28mins
Name
Class
Date
1.
The continuous random variable may assume any numerical value in an interval or collection of intervals.
a)
True
b)
False
2.
F(x) = .50 is valid.
a)
True
b)
False
3.
Which of the following is an example of a random variable?
a)
The number of students who visit the Health Center
b)
The number of MBA applicants
c)
The number of guests in a basketball game
d)
All of the above.
4.
The expected value is the mean of a random variable, which is also the central location for a random variable.
a)
True
b)
False
5.
How many solutions does this linear system have?
a)
One Solution
b)
No Solutions
c)
Infinite Solutions
d)
Two Solutions
6.
Write each product using an exponent.
4 x 4 x 4 x 4 x 4
4 x 4 x 4 x 4 x 4
a)
45
b)
54
c)
46
d)
46
7.
A farmer has asked you for advice on the best strategy for planting wheat and corn on her 500-acre farm. To make it through harvest time, each acre of wheat she plants will require 1 person-day of labor and other expenses of $20. Each acre of corn she plants will require 5 person-days of labor and expenses of $30. The farmer has $11,400 and 1480 person-days of labor available, and she expects to make a profit of $90 per acre of wheat and $120 per acre of corn. If x = acres of wheat and y = acres of corn, which of the following is NOT a constraint?
a)
x + y ≤ 500
b)
20x + 30y ≤ 11,400
c)
y ≥ 5x + 30
d)
x + 5y ≤ 1480
8.
Which ordered pair is a solution to the given equation?
f(x)=2x2+3x
f(x)=2x2+3x
a)
(-1, 5)
b)
(1, 5)
c)
(2, 2)
d)
(0, 5)
9.
Evaluate this expression using the quotient rule.
a)
95
b)
99
c)
15
d)
9-5
10.
Simplify the following expression:
xy-7
xy-7
a)
xy7
b)
x/y7
c)
x7/y
d)
x7y
11.
Simplify (-1/2)0
a)
1
b)
0
c)
-1
d)
-2
12.
(2x3y)6
a)
2x18y6
b)
64x18y6
c)
64x3y6
d)
2x3y6
13.
40
a)
0
b)
1
c)
4
d)
-4
14.
a)
A
b)
B
c)
C
d)
D
15.
a)
A
b)
B
c)
C
d)
D
16.
a)
A
b)
B
c)
C
d)
D
17.
a)
A
b)
B
c)
C
d)
D
18.
a)
A
b)
B
c)
C
d)
D
19.
3 + -7
a)
10
b)
4
c)
-10
d)
-4
20.
Simplify:
a)
0
b)
-3n3 +8n
c)
-3n6
d)
-6n3
100 %
