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AP Statistics Probability Review Flashcards | StudBud
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AP Statistics Probability Review
AP Statistics Probability Review
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Semester 1 Final Probability Review
Flashcards
30 cards
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Practice quiz
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Questions
30
Answers
1
Suppose a die is tossed 5 times. What is the probability of getting exactly 2 fours?
0.028
0.161
0.167
0.333
2
A card is drawn at random from a deck. Find the prob. of getting a king or a jack.
3/52
1/13
1/26
2/13
3
If P(A)=.5 and P(B)=.3 what is P(A or B) if disjoint (mutually exclusive)?
.8
none of these
.5
.3
4
What is the probability of having four children and at least one girl?
.5
.9375
.0625
.125
5
What is the prob. of getting a sum of 7 given that the first die rolled was an odd number?
1/9
1/12
1/6
1/4
6
A coin is tossed three times. What is the probability that it lands on heads exactly one time?
0.5
0.125
0.375
0.333
7
What is the probability that you choose a boy given that that person chooses sports?
none of these
.625
.5
.32
8
There are 4 burger choices, 6 side choices, and 10 drink choices. How many meals can be made?
100
240
34
20
9
P(A)= 0.8 and P(B|A)= 0.5. Then, P(A and B)=
0.3
0.8
1
0.4
10
A die was rolled once. Which event is disjoint?
The die is even; the die is odd.
the die is prime; the die is a 2
the die is prime; the die is even
the die is at least 4; the die is less than 5
11
What is the probability that you choose a female or someone who prefers movies?
cant answer since categories are not independent.
.6
.76
.92
12
If 60% of seniors have a job, 35% have a car, 20% have both, how many have neither?
25%
huh?
95%
5%
13
If A and B are independent then
P(A and B)=P(A)P(B)
All of these
P(A|B)=P(A)
P(B|A)=P(B)
14
What is the probability of having 4 children and they are all boys.
.25
.5
.125
.0625
15
Two dice were rolled at the same time. Which event is independent?
One die is a prime number; the sum of the two dice is 2
one die is 7; the difference of the two dice are 6
One dice is a 3; the other die is a 4
One die is a 3; the sum of the two dice is 12
16
A card is drawn at random from a deck of cards. Find the probability of getting a king.
1/13
3/52
1/26
1/52
17
What is the probability of rolling a combined score greater than 4 with a set of dice?
2/3
5/6
1/16
1/4
18
A card is drawn at random. Find the prob. of getting a king of hearts or an ace of hearts.
1/26
2/13
1/52
1/13
19
Suppose a coin is flipped 3 times. What is the probability of getting two tails and one head?
1/2
3/8
1/3
3/4
20
A card is drawn at random from a deck. Find the probability of getting a heart or a diamond.
2/13
26/52
1/26
1/13
21
If P(A)=.5 and P(B)=.3 what is P(A or B) if A and B are independent. (Be careful)
.65
.8
none of these
.5
22
How many possible outcomes are possible when rolling a pair of dice?
24
12
6
36
23
P(A) = 40%, P(B) = 30%, find P(A and B) if A and B are independent.
0.8
0.12
0.7
0.10
24
P(snow)=.15; P(no heat)=.08. School is closed if both occur. If ind. what is P(School is closed)
.12
.07
.23
.012
25
what is probability of picking three red cards in a row out of a deck
without
replacing?
.5
.125
none of these
.117
26
How many ways can a single fair coin be tossed 4 times?
4
8
16
256
27
A card is drawn at random from a deck. Find the probability that the card is red and a queen.
1/26
1/13
1/15
2/13
28
If prob. of being late to school is .08, what is prob. that you are late at least once 5 days?
.08
.92
.32
.341
29
Tom is a 70% free throw shooter. What's the prob. that Tom makes his 1st throw on his 5th shot?
0.0081
0.0024
0.0057
0.0720
30
Are the following events mutually exclusive? A=having an A in AP Statistics & B = having a C in AP Statistics.
Yes
No
