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Probability questions for statistics class. #probability
Flashcards
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Questions
28
Answers
1
What is sample space, S?
The area where samples are.
The total possible outcomes of an event.
The favorable outcomes of an event.
2
What is the probability that you draw a
diamond
from a well-shuffled deck of cards?
1/2
1/4
1/13
0
3
What is theoretical probability?
The probability based on what has happened.
The probability that should happen.
4
Two dice are rolled. What is the probability that the sum is 12?
1/12
1/36
1/6
0
5
What is the theoretical probability that you draw a
red
card from a shuffled deck of cards?
0
1/4
1/13
1/2
6
If I toss a fair coin, what is the probability that tails appears?
1
1/2
0
None of the these
7
What is the probability that a number less than 7 will appear when you roll a die one time?
1
1/2
1/6
0
8
What is the odds of rolling a 7 when you roll one standard die one time?
3/6
0
5/6
1/6
9
If I toss a fair coin twice and get TT, what is the probability that tails appears next toss?
0
2/3
1/2
1
10
What is the probability that you draw an
ace
from a well-shuffled deck?
0
1/4
1/13
1/2
11
A women has three sons. What is the probability that her next child will be a girl?
1/2
1/8
1/4
0
12
What is the probability of rolling a number
greater than 4
?
0
1/2
1
1/3
13
If the probability of an event happening is ¼, then the probability of it not happening is ¾.
True
False
14
On a single roll of a standard die, what is the probability that a 3 will NOT appear?
1/6
5/6
0
3/6
15
What are dependent events?
Events where the probabilities ARE NOT related.
Events where the probabilities ARE related.
16
If an event is
certain to occur
, it has a probability of zero.
False
True
17
Two coins are tossed. What is the probability of getting two heads, P(HH)?
1
1/2
1/4
0
18
What is the symbol for the empty set?
∩
∅
Ω
⊂
19
Given a bag with 12 red and 7 green marbles, what is the odds of randomly selecting a
red
one?
7/19
1/2
7/12
12/19
20
What is the probability that you draw the
ace of diamonds
from the deck?
0
1/52
1/4
1/13
21
You roll a fair six-sided die once. What is the probability of getting an
even number
?
0
1/6
1/2
1/3
22
What is experimental probability?
The probability based on what has happened?
The probability based on what should happen.
23
Which of the following experiments does
NOT have equally likely outcomes
?
Toss a coin.
Choose a letter at random from the word SCHOOL.
Choose a number at random from 1 to 7.
24
Two events are independent if the occurrence of one doesn't affect the probability of the other
False
True
25
On a single roll of a standard die, what is the probability that an odd number will appear?
3/6
1/6
0
1
26
What are independent events?
Events where the probabilities ARE NOT related.
Events where the probabilities ARE related.
27
If an event is
impossible
, it has a probability of zero.
True
False
28
What is the probability of randomly choosing a vowel (a,e,i,o,u) from the English alphabet?
None of these.
1/21
5/26
21/26
