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1. If P(A) = 0.85, P(A È B) = 0.72, and P(A Ç B) = 0.66, then P(B) =
0.28
0.15
0.53
0.15
Question Type: Multiple Choice
2. One of the basic requirements of probability is
both P(A) P(Ac) 1 and if there are kexperimental outcomes, then P(E1) P(E2) ... P(Ek) 1
both P(A) P(Ac) 1 and if there are kexperimental outcomes, then P(E1) P(E2) ... P(Ek) 1
P(A) P(Ac) 1
if there are kexperimental outcomes, then P(E1) P(E2) ... P(Ek) 1
Question Type: Multiple Choice
3. The union of events A and B is the event containing
all the sample points common to both A and B
all the sample points belonging to A or B
all the sample points belonging to A or B or both
all the sample points belonging to A or B, but not both
Question Type: Multiple Choice
4. If P(A) = 0.38, P(B) = 0.83, and P(A Ç B) = 0.57; then P(A È B) =
0.78
1.21
0.64
1.78
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 probability of an intersection of two events is computed using the
subtraction law
addition law
multiplication law
division law
Question Type: Multiple Choice
7. 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
8. The weights (in pounds) of a sample of 36 individuals were recorded and the following statistics were calculated mean = 160 range = 60 mode = 165 variance = 324 median = 170 The coefficient of variation equals
203.12%
11.25%
0.1125%
0.20312%
Question Type: Multiple Choice
9. Any process that generates well-defined outcomes is
an experiment
an event
a sample point
None of the answers is correct.
Question Type: Multiple Choice
10. An element of the sample space is
an outlier
a sample point
an event
an estimator
Question Type: Multiple Choice
11. The total number of data items with a value less than or equal to the upper limit for the class is given by the
cumulative frequency distribution
cumulative relative frequency distribution
relative frequency distribution
frequency distribution
Question Type: Multiple Choice
12. An experiment consists of tossing 4 coins successively. The number of sample points in this experiment is
8
16
4
2
Question Type: Multiple Choice
13. 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
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