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Duplicate of Probability Distribution Flashcards | StudBud
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Duplicate of Probability Distribution
Duplicate of Probability Distribution
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Statistics Probability Distributions
Flashcards
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Questions
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Answers
1
Which of the following is a requirement for a probability distribution?
All numbers must be the same.
numbers must sum to 1
All numbers must be between 0 and 1
numbers can be negative
2
If I want to find the probability of getting at least 2 cars, what formula would I use?
P(x<2)
P(x≥2)
P(x=2)
P(x>2)
3
Which is a binomial experiment?
Flipping a coin
Picking a card
Rolling a dice
4
Is the following variable discrete or continuous? Amount of gasoline needed to go to the beach
Continuous
Discrete
5
Is the following variable discrete or continuous? The cost a your last Starbucks purchase
Discrete
Continuous
6
Expected value is the same as the
Varience
Standard Deviation
None of the above
Mean
7
If I want to find the probability of getting exactly 2 cars, what formula do I use?
P(x > 2)
P(x = 2)
P(x < 2)
8
Is the following variable discrete or continuous? The time it takes you to answer this question
Discrete
Continuous
9
If I want to find the probability of getting at most 2 cars, what formula would I use?
P(x>2)
P(x≤2)
P(x<2)
P(x≥2)
10
Is the following a binomial experiment? Count the number of boys and girls in various classes.
not binomial, there are results other than success & fail
binomial, there are only two variables
not binomial, there is not a fixed number of trials
binomial, the probability of success is same for all trials
11
Given a random variable X between 0 and 3, if P(0) = .15, P(1) = .2, P(2)= .3, P(3) =?
.45
.65
.35
.25
