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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. If A and B are mutually exclusive, then
P(A) + P(B) = 1
P(A B) = 1
P(A) + P(B) = 0
P(A B) = 0
Question Type: Multiple Choice
3. 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
4. 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
5. 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
6. __________ can be used to determine the percentage of data values that must be within one, two, and three standard deviations of the mean for data having a bell-shaped distribution.
box plot
five-number summary
empirical rule
Chebyshev's theorem
Question Type: Multiple Choice
7. A researcher has collected the following sample data. The mean of the sample is 5. 3 5 12 3 2 The coefficient of variation is
72.66%
264%
81.24%
330%
Question Type: Multiple Choice
8. 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
9. The probability of an intersection of two events is computed using the
subtraction law
addition law
multiplication law
division law
Question Type: Multiple Choice
10. If the data distribution is symmetric, the skewness is
1
0.5
None of the above
Question Type: Multiple Choice
11. 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
12. An element of the sample space is
an outlier
a sample point
an event
an estimator
Question Type: Multiple Choice
13. 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
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