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- 1. Multiple Choice
Is this a probability distribution?NoYes - 2. Multiple ChoiceIs this a probability distribution?NoYes
- 3. Multiple ChoiceThe table represents the probability of guessing correct on a 5 question true-false quiz. Is it unusual to get 0 correct?No, since the probability is less than or equal to .05.Yes, since the probability is less than or equal to .05No, since the probability is greater than .05.Yes, since the probability is greater than .05.
- 4. Multiple Choice00.10.50.05
- 5. Multiple Choice03/161/163/8
- 6. Multiple ChoiceYes, because all of the probabilities are between 0 and 1 inclusive and the sum of all the probabilities is 1.No, all probabilities are not be between 0 and 1 inclusiveNo, the sum of all the probabilities is not 1.Yes, because the distribution is symmetric
- 7. Multiple Choice
0.20
0.29
0.39
0.61
- 8. Multiple ChoiceWhich of the following is not a random variable?The heights of randomly-selected buildings in New York City.The suit of a card randomly-selected from a 52-card deck.The number of children in randomly-selected households in the United States.The amount of money won (or lost) by the next person to walk out of a casino in Las Vegas.
- 9. Multiple ChoiceA random variable isa hypothetical list of the possible outcomes of a random phenomenon.any phenomenon in which outcomes are equally likely.any number that changes in a predictable way in the long run.a variable whose value is a numerical outcome associated with a random phenomenon.
- 10. Multiple Choice
Which of the following is the first requirement for a probability distribution?
- 11. Multiple Choice
Which of the following is the second requirement for a probability distribution?
- 12. Multiple Choice
If two coins are tossed, which is not a possible value of the random variable for the number of heads?
0
1
2
3
- 13. Multiple Choice
Consider the following distribution where X = number of mice caught in an apartment in a night:
Mice | Probability
0 | 0.12
1 | 0.20
2 | 0.31
3 | 0.14
4 | 0.16
5 | 0.07
Which of the following means "trapping at least one mouse?"
X<1
X<1
X>1
X>1
- 14. Multiple Choice
Yes
No
Maybe
Cannot be determined
- 15. Multiple Choice
Using the probability distribution, find P(X > 1).
- 16. Multiple Choice
What formula describes the probability distribution?
- 17. Multiple Choice
Given the probability distribution, what is P(X < 1)?
- 18. Multiple Choice
0.34
0.88
0.17
0.15
- 19. Multiple Choice
0.17
0.29
0.22
1
- 20. Multiple Choice
Find the probability that of a student participating in exactly 2 extra- curricular activities.
0.67
0.133
0.335
67
- Answer choicesTagsAnswer choicesTags