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1. Two events are mutually exclusive if
the probability of their intersection is 1
they have no sample points in common
the probability of their intersection is 0.5
the probability of their intersection is 1 and they have no sample points in common
Question Type: Multiple Choice
2. A lottery is conducted using three urns. Each urn contains chips numbered from 0 to 9. One chip is selected at random from each urn. The total number of sample points in the sample space is
1000
100
30
729
Question Type: Multiple Choice
3. In statistical experiments, each time the experiment is repeated
the same outcome must occur
the same outcome cannot occur again
a different outcome may occur
None of the above
Question Type: Multiple Choice
4. Since the sun must rise tomorrow, then the probability of the sun rising tomorrow is
much larger than one
zero
infinity
None of the above
Question Type: Multiple Choice
5. The probability of at least one head in two flips of a coin is
0.5
0.33
0.75
1.00
Question Type: Multiple Choice
6. The collection of all possible sample points in an experiment is
the population
a sample point
the sample space
an experiment
Question Type: Multiple Choice
7. A(n) __________ is a graphical representation in which the sample space is represented by a rectangle and events are represented as circles.
histogram
frequency polygon
tree diagram
Venn diagram
Question Type: Multiple Choice
8. Given that event E has a probability of 0.25, the probability of the complement of event E
is 0.25
can have any value between zero and one
cannot be determined with the above information
must be 0.75
Question Type: Multiple Choice
9. Of the last 100 customers entering a computer shop, 25 have purchased a computer. If the classical method for computing probability is used, the probability that the next customer will purchase a computer is
1.00
0.75
0.25
0.50
Question Type: Multiple Choice
10. The probability of the intersection of two mutually exclusive events
must always be equal to 1
can be any positive value
can be any value between 0 to 1
must always be equal to 0
Question Type: Multiple Choice
11. If the data distribution is symmetric, the skewness is
1
0.5
None of the above
Question Type: Multiple Choice
12. Of five letters (A, B, C, D, and E), two letters are to be selected at random. How many possible selections are there?
20
7
10
50
Question Type: Multiple Choice
13. A sample point refers to a(n)
individual outcome of an experiment
set of all possible experimental outcomes
numerical measure of the likelihood of the occurrence of an event
All of these answers are correct
Question Type: Multiple Choice
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