What is the general multiplication rule?

P\left(AandB\right)=P\left(A\left|B\right|\right)\cdot P\left(B\right)

What is the formula for conditional probability?

\left(P\left(A\right|B\right)=\frac{P\left(AandB\right)}{P\left(B\right)}

What is conditional probability?

Probability that one event occurs under condition that another event occurs

What is a permutation?

The number of ways that you can order individuals/digits

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Statistics Unit 3 Review: Conditional Probability, Permutations and Combinations, Bin. Formula

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Questions 21

Answers

1
A coin is tossed 8 times. What is the probability you get exactly 1 tails?
0.996
0.03125
0.125
0.875
2
What condition must be satisfied to use the binomial formula?
All trials are independent
There is an infinite number of trials
All trials have different probability of success
All trials are dependent
3
What is the general multiplication rule?
P\left(AandB\right)=P\left(A\left|B\right|\right)\cdot P\left(B\right)
P\left(AandB\right)=P\left(A\right)\cdot P\left(B\right)
P\left(AandB\right)=P\left(B\left|A\right|\right)\cdot P\left(B\right)
P\left(AandB\right)=P\left(A\left|B\right|\right)\cdot P\left(A\right)
4
What is the probability of getting a tails and rolling a 5?
1/12
1/6
1/2
1/8
5
Does order of individuals/digits matter in permuations?
If I feel like it
Sometimes
Always
Never
6
Find the probability that a randomly chosen customer ordered a burger given that they ordered fries.
0.70
0.80
0.40
0.75
7
You toss a fair coin 4 times. What is the probabilty that you get at least 1 tails?
0.75
.0625
0.25
0.9375
8
42% of students love math. 32% dislike English. 14% love math and dislike English. P(love math or dislike English)?
10%
88%
74%
60%
9
What is NOT a required condition to use the binomial formula?
All trials have the same probability of success
All trials are dependent
There are only 2 outcomes for each trial (success and failure)
There are a fixed number of trials
10
If X is binomially distributed with 9 trials and a probabilty of success of .23 at each attempt, P(X<1) =?
0.095
0.905
0.23
0.351
11
What is the formula for conditional probability?
\left(P\left(A\right|B\right)=\frac{P\left(A\right)}{P\left(B\right)}
\left(P\left(A\right|B\right)=P\left(A\right)\cdot P\left(B\right)
\left(P\left(A\right|B\right)=\frac{P\left(AandB\right)}{P\left(B\right)}
\left(P\left(A\right|B\right)=\frac{P\left(AandB\right)}{P\left(A\right)}
12
If two events are mutually exclusive then they are...
non-disjoint
confounding
dependent
independent
13
CCA is selecting seniors for 8 different prefect positions. This is a...
Binomial Formula problem
Combination
Permutation
Conditional probability problem
14
If A and B are independent, then \left(P\left(A\right|B\right)=
P(A)
P\left(A\right)\cdot P\left(B\right)
P(B)
\frac{P\left(AandB\right)}{P\left(B\right)}
15
Can you determine conditional probabilities from a two-way table?
No - I like doing out all the calculations myself.
It depends
Never!!
Yes!
16
What is conditional probability?
The probability of any given event occurring
Probability event occurs given it's independent from another event
Probability that two events occur at the same time
Probability that one event occurs under condition that another event occurs
17
The binomial formula requires the use of...
permutations
conditional probability
estimations
combinations
18
How do you check for independence?
Both red and yellow
Check if they are mutually exclusive events
See if \left(P\left(A\right|B\right)=P\left(A\right)
See if P\left(AandB\right)=P\left(A\right)\cdot P\left(B\right)
19
How many ways can you choose 12 players to be on a 7 person roster?
12
19,958,400
792
7
20
What is a permutation?
The number of items you pick out of your total options
The number of ways that you can choose a group
The number of ways that you can order individuals/digits
A glitch in the matrix
21
How many different ways can you order a milkshake if there are 4 flavors, 3 kinds of milk, and 6 toppings?
13
72
12
24

Statistics Unit 3 Review: Conditional Probability, Permutations and Combinations, Bin. Formula Flashcards | StudBud