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Weeks 1-4 Review (use for Week 4) Flashcards | StudBud

Explore/Weeks 1-4 Review (use for Week 4)

Weeks 1-4 Review (use for Week 4)

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Questions 10

Answers

1
Identify the formula for the average number of seats. This is the expected value for the probability distribution table.
(2*.08)+(4*.31)+(5*.61) = 4.45
(2*.08)*(4*.31)*(5*.61) = 0.61
(2+.08)*(4+.31)*(5+.61) = 50.3
(2+.08)+(4+.31)+(5+.61) = 12
2
What type of variable is the height of women?
Continuous Quantitative
Discrete Quantitative
None of the above
Categorical
3
P\left(\overline{X}\right)=
P(X)-1
1+P(X)
1-P(X)
P(X)+1
4
Suppose W means it's Wednesday and M means it's May. P\left(W∩M\right) means
The probability of it being Wednesday, knowing it's May.
The probability of it being a Wednesday and May.
The probability that it is May, knowing it's a Wednesday.
The probability of it being either a Wednesday or May.
5
What type of variable is a car's make and model?
Continuous Quantitative
Categorical
Discrete Quantitative
None of the above
6
The missing value in the table shows the probability of
saying yes to corn and no to green beans
saying yes to both corn and green beans
saying no to corn and yes to green beans
saying no to both corn and green beans
7
Suppose W means it's Wednesday and M means it's May. P(W|M) means
The probability that it is May, knowing it's a Wednesday.
The probability of it being either a Wednesday or May.
The probability of it being a Wednesday and May.
The probability of it being Wednesday, knowing it's May.
8
In statistics, correlation is used to describe the relationship between
All of the above
two quantitative variables
two categorical variables
a categorical and a quantitative variable
9
In statistics, normal means bell-shaped and symmetric
False
True
10
Find the missing value in the table below
40
35
45
30