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Probability CARE
Probability CARE
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Probability questions for statistics class. #probability
Flashcards
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Questions
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Answers
1
A women has three sons. What is the probability that her next child will be a girl?
0
1/2
1/8
1/4
2
If I toss a fair coin twice and get TT, what is the probability that tails appears next toss?
0
1/2
1
2/3
3
What is the probability of certain?
.1
.9
1
.6
4
What are independent events?
The first one affects the second one
The second one affects the first one
Events where the probabilities ARE related.
The first one doesn't determine or affect the second one
5
On a single roll of a standard die, what is the probability that an odd number will appear?
1/6
0
1
3/6
6
3 red chips and 4 blue chips-- P(red,blue)--without replacing the first one.
7/7
2/7
12/49
7
What are dependent events?
The denominator stays the same
The first one affects or determines the second one
Events where the probabilities ARE NOT related.
one doesn't affect the other
8
What is experimental probability?
The probability based on what has happened?
The probability based on what should happen.
9
What is the probability that you draw an
ace
from a well-shuffled deck?
1/2
1/13
0
1/4
10
Two events are independent if the occurrence of one doesn't affect the probability of the other
happy
never
False
True
11
What is theoretical probability?
The probability based on what has happened.
The probability that should happen.
12
What is the odds of rolling a 7 when you roll one standard die one time?
3/6
1/6
5/6
0
13
Given a bag with 12 red and 7 green marbles, what is the odds of randomly selecting a
red
one?
1/2
7/12
12/19
7/19
14
What is the probability of randomly choosing a vowel (a,e,i,o,u) from the English alphabet?
None of these.
1/21
21/26
5/26
15
Two coins are tossed. What is the probability of getting two heads, P(HH)?
1
1/2
1/4
0
16
Using a fair coin, what is the P(Tails,Tails)
1/2
1/4
1
1/5
17
What is the probability that a number less than 7 will appear when you roll a die one time?
1/6
1
1/2
0
18
An event with a probability of 0.1 ...
is certain to occur.
is not very likely to occur.
cannot occur.
is very likely to occur.
19
What is the probability unlikely?
1
.2
.5
.8
20
What is the probability that you draw a
diamond
from a well-shuffled deck of cards?
1/2
1/4
0
1/13
21
What is the theoretical probability that you draw a
red
card from a shuffled deck of cards?
1/13
1/4
0
1/2
22
If an event is
certain to occur
, it has a probability of zero.
True
False
23
If I toss a fair coin, what is the probability that tails appears?
None of the these
0
1/2
1
24
You roll a fair six-sided die once. What is the probability of getting an
even number
?
1/2
1/3
1/6
0
25
Two dice are rolled. What is the probability that the sum is 12?
1/12
1/6
0
1/36
26
What is the probability that you draw the
ace of diamonds
from the deck?
1/52
0
1/13
1/4
27
What is the probability of rolling a number
greater than 4
?
1
1/3
1/2
0
28
If an event is
impossible
, it has a probability of zero.
True
False
29
On a single roll of a standard die, what is the probability that a 3 will NOT appear?
1/6
0
3/6
5/6
30
Which of the following experiments does
NOT have equally likely outcomes
?
Toss a coin.
Choose a number at random from 1 to 7.
Choose a letter at random from the word SCHOOL.
31
If the probability of an event happening is ¼, then the probability of it not happening is ¾.
True
False
