Which of the following statements is true for any two events A and B defined on a sample space S? ...

Which of the following statements is true for any two events A and B defined on a sample space S?

A) If the intersection of events A and B is the empty set, then A and B are collectively exhaustive.
B) If the union of events A and B is the empty set, then each of A and B is the empty set.
C) If events A and B are collectively exhaustive, then A B .
D) If events A and B are mutually exclusive and collectively exhaustive, then the union of A and B is not necessarily the sample space.

Q. 2

The modal score is:

A) 16
B) 17
C) 18
D) 20

Q. 3

The procedure used to select a sample of objects from a population in a way that each member of the population is chosen strictly by chance and is equally likely to be chosen is called:

A) sampled population.
B) systematic sampling.
C) simple random sampling.
D) self-selected sampling.

Q. 4

The median score is:

A) 16
B) 17
C) 18
D) 19

Q. 5

What is the best type of chart for comparing two sets of categorical data?

A) Ogive
B) bar chart
C) pie chart
D) histogram

Q. 6

The mean score is:

A) 17.0
B) 17.6
C) 18.0
D) 10.0

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Which of the following statements is true for any two events A and B defined on a sample space S? ...

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