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WorksheetsESLA 18EC44 Mock Quiz
Total questions: 10
Worksheet time: 12mins
Name
Class
Date
1.
Is this a probability distribution?
a)
No, the sum of p(x) does not equal 1.
b)
Yes, all p(x) are between 0 and 1.
c)
No, all p(x) are not between 0 and 1.
d)
Yes, the sum p(x) is 1.
2.
Given the probability model in the table below, what is the expected value of the random variable?
X 50 20 5
P(X) 0.1 0.3 0.6
X 50 20 5
P(X) 0.1 0.3 0.6
a)
14
b)
4.67
c)
5
d)
7.5
3.
A random variable is defined by a rule that assigns a _______________ to every outcome in a sample space.
a)
number
b)
letter
c)
Event
d)
probability
4.
The Sum Rule states that the sum of the probabilities of all instances of a random variables equals...
a)
1
b)
0
c)
P(E)
d)
P(E')
5.
Find the value of k
a)
1/15
b)
1/16
c)
1/17
d)
1/14
6.
Find the value of c
a)
0.8
b)
0.2
c)
0.3
d)
0.1
7.
What is the shape of the distribution?
a)
Skewed Left
b)
Skewed Right
c)
Normal
d)
Uniform
8.
Which statement is true?
a)
5a + b = 1
b)
6a + b = 1
c)
5a + 2b = 1
d)
7a + b = 1
9.
Find a if b = 0.4
a)
0.1
b)
0.2
c)
0.4
d)
0.6
10.
Find the value of k
a)
1/6
b)
1/14
c)
1/11
d)
1/15
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