Discrete Random Variables
Authored by CHRISTINE TURNER
Mathematics
12th Grade
CCSS covered
Used 130+ times
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11 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
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
Tags
CCSS.HSS.MD.A.3
CCSS.HSS.MD.A.2
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Find the mean (expected value) of the probability distribution.
85
83.2
87.1
84.4
Tags
CCSS.HSS.MD.A.3
CCSS.HSS.MD.A.2
CCSS.HSS.MD.B.5
3.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Determine which of the following distribution is NOT a probability distribution. (Remember that a valid probability distribution must add up to 1)
A
B
C
D
Tags
CCSS.HSS.MD.A.3
CCSS.HSS.MD.A.1
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Is this a probability distribution?
No, the sum of p(x) does not equal 1.
Yes, all p(x) are between 0 and 1.
No, all p(x) are not between 0 and 1.
Yes, the sum p(x) is 1.
Tags
CCSS.HSS.MD.A.3
CCSS.HSS.MD.A.1
CCSS.HSS.MD.A.4
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The table above shows a television station's advertisement sales. The distribution of sales for one 24-hour day is given. Solve for the mean. Round to the nearest hundredth.
31.8
15.68
0.20
1.00
Tags
CCSS.HSS.MD.A.2
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The table above shows a television station's advertisement sales. The distribution of sales for one 24-hour day is given. Solve for the standard deviation. Round to the nearest hundredth.
35.76
268.1
16.3
1279.35
Tags
CCSS.HSS.ID.A.2
CCSS.HSS.ID.A.3
CCSS.HSS.ID.A.4
7.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Identify whether the experiment involves a discrete or a continuous random variable.
Rotating a spinner that has 4 equally divided parts: blue, green, yellow, and red
Discrete Random Variable
Continuous Random Variable
Tags
CCSS.HSS.MD.A.3
CCSS.HSS.MD.A.1
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