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Intro to Probability Practice

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Last updated almost 4 years ago
20 questions
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Question 1
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Question 2
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Question 3
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Question 4
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Question 5
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Question 6
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Question 7
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Question 8
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Question 9
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Question 10
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Question 11
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Question 12
12.

A bag has 3 red marbles, 2 blue, 4 greens and  1 yellow. What is the theoretical probability of pulling a red?

Question 13
13.

Question 14
14.

Question 15
15.

Question 16
16.

Question 17
17.

If P(A) = 0.54, what is the P(A)' = .... ?

Question 18
18.

If P(B) = 0.32, what is P(B)' = ....?

Question 19
19.

Question 20
20.

What is the "complement" of event of spinning the spinner to land on a prime number?
(hint: prime # is 2,3,5,7,11,13.... Even # are divisible by 2)

Probability can be written as ...
Fraction
percent
decimal
none of the above
Kerry is picking marbles out of a bag. Out of which bag would it be impossible to choose a white marble?
Correctly match each percentage to each term.
0%
Unlikely
100%
Equally likely as not likely
50%
Likely
85%
Impossible
20%
Certain
I have 4 yellow marbles and 8 blue marbles in a bag. What is the probability that I will pick a blue?
likely
certain
unlikely
impossible
Kevin has 5 coins in his pocket. A dime, 2 pennies, a quarter, and a nickel. If Kevin randomly picks one coin out of his pocket. What would the probability he pick the penny? Select all APPLY
Theoretical Probablity
Empirical Probability
0.25
20%
40%
A person has 40 songs downloaded to their smartphone and has the phone set to a random shuffle. The classification of the 40 songs could be described as: 5 Country songs, 10 Classical pieces, 15 Hip Hop, 5 Rap, and 5 Pop Songs.

What is the probability that the next song played is Classical music?
10% ; Empirical Probability
10% ; Subjective Probability
¼ ; Dependent Probability
¼ ; Theoretical Probability
Based on the teacher’s opinion, she thinks there is about a 75% chance that all of the students will pass the State Department’s End of Course Test.
subjective probability
Empirical Probability
Theoretical probability
Authentic probability
Jessica doesn’t have any idea of what the answer is on one of her multiple-choice questions like this problem. The problem has 4 possible choices. After she guesses the answer, she realized that she has a 25% chance of getting that question correct. What type of probability did she use?
subjective probability
Empirical Probability
Theoretical probability
Authentic probability
What is the probability of a complement of A? Remember to simplify your answer.

1/8
2/3
1/4
3/4
A jar contains 2 pink, 6 red, and 4 blue marbles. If you pick one marble without looking, what is the probability that the marble you pick will be red or blue? (Make sure you simplify your answer)
5/6
1/2
1/3
1/6
The chart below represents the number of marbles in a jar. What is the probability of picking green?
(make sure to simplify your answer)

P(green) =
5/19
5/14
5/38
10/28
What is the probability of the spinner landing on red?

P(RED) =
5/12
5/5
1/5
3/5
What is the approximate Probability of drawing a Red Face Card from a standard deck of shuffled cards?

P( RED FACE CARD) =
23.1%
19.2%
15.4%
11.5%
What is the approximate Probability of drawing a QUEEN (Q) from a standard deck of shuffled cards?

P( QUEEN) =
What is the probability of rolling a single dice to a number greater than 4?
P(>4) =
The probability of raining today is 30%.  What is the probability that it will NOT rain today?
30%
0%
70%
100%