Unit 4 Random Variables and Distributions Review
Authored by Ms. Sigrid Gulbis
Mathematics
9th - 12th Grade
CCSS covered
Used 6+ times
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19 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Emma is playing a spinning game using the spinner shown. She gets one spin and needs green to win. What's probability that she will NOT win?
Tags
CCSS.HSS.CP.A.1
2.
MULTIPLE CHOICE QUESTION
5 mins • 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
3.
MULTIPLE CHOICE QUESTION
5 mins • 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.3
CCSS.HSS.MD.A.2
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
How many students have more than 1,000 songs on their MP3 player?
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
What percent of students have less than 1,000 songs on their MP3 players?
6.
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
CCSS.HSS.MD.B.5
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
A coin is flipped 3 times. If you get tails once you get $5, tails twice you get $15, and tails on all three flips you get $40. What is the expected amount of money you will get?
Tags
CCSS.7.NS.A.3
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