A probability distribution is legitimate if

all probabilities add to 1, every probability is between 0 and 1

Events A and B are independent if...

Learning that A occurs doesn't change the prob that B occurs

Which of the following is a binomial trial?

Out of 14 AP Stats students, find prob 3 pass the AP exam.

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Probability Review

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Vocab for Unit 5 AP Statistics Probability

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Questions 17

Answers

1
A probability distribution is legitimate if
every probability is between -1 and 1
all probabilities add to 1
all probabilities add to 0
every probability is between 0 and 1
2
The collection of all possible outcome values is called...
Event
Theoretical Probability
The Solution Set
Sample Space
3
Events A and B are independent if...
they share no outcomes in common
Learning that A occurs doesn't change the prob that B occurs
Event A has an effect on Event B
Event A and Event B are mutually exclusive
4
Which of the following is a binomial trial?
Out of 14 AP Stats students, find prob 3 pass the AP exam.
Emma buys no new shoes.
Kameron makes his fifth free throw.
The expected number of chocolate chips in a cookie.
5
SD(X) = 13. Find SD(X) + 5.
18
13
8
cannot be determined
6
As the number of trials increases, the frequency that a coin lands on heads gets closer to .5
Multiplication Rule
Random Phenomenon
Probability
Law of Large Numbers
7
The probability of B given A
P(A|B)
P(B)+P(A)
P(BUA)
P(B|A)
8
P(A^c) = 1 - P(A) is called the...
Subtraction Rule
Complement Rule
Conditional Rule
Continuous Rule
9
Events A and B are independent when...
P(B|A) = P(B)
P(B) + P(A) = P(A)
P(B|A) = P(Bc)
P(B|A) = P(A)/P(B)
10
Two events that are mutually exclusive are also independent.
Never
Cannot be determined
Always
Sometimes
11
Var(X) = 10 and we multiply all the data by 3. What is the new Var(X)?
30
90
10/3
10
12
What is the relationship between variance and standard deviation?
SD = Var squared
Var = SD squared
Square root of Var = SD
Var + Var = SD
13
Find E(X)
32
110
50
26
14
E(X) = 9. Find E(X) + 42
cannot be determined
9
51
42
15
Two events that share no outcomes in common are called...
disjoint
theoretical
independent
mutual allowance
16
If we know the percent, how do we find z-score?
Look at the edges of the z table
Look in the z table
17
P(A or B) = P(A) + P(B) only if...
events A and B are discrete
events A and B are not equal
events A and B are disjoint
events A and B are independent

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