Which of the
following statement is incorrect regarding a standardised
normal distribution? A mean (µ) is equal to 0 and standard deviation
(σ) is equal to 1.
B 68% of the data around the mean is about one
standard deviation of the data. C mean
(µ) is equal to 1 and standard
deviation (σ) is equal to 0.
D Total probability under the
curve is 1.
Question 7 (1 mark)
If event A
and event B cannot occur simultaneously, then events A and B are said to be:
A statistically independent
B mutually exclusive
C perfectly correlated
D collectively exhaustive
Question 8 (1 mark)
The annual return of a hedge fund measured in percentage terms is an
example of what kind of variable?
A indiscrete
B continuous
C discrete
D uniform
Question 9 (1 mark)
Consider the following two statements regarding the properties of a
probability function of a discrete random variable:
Statement
1: 0 ≤ p (x )≤1 , because probability is a number between (-1) and (+1).
Statement
2: The sum of the probabilities p(x) over all values of X equals 1.
Which of
the statement(s) is correct?
A Both Statement 1 and 2 are correct
B Both Statement 1 and 2 are incorrect
C Only Statement 1 is correct
D Only Statement 2 is correct
Question 10 (1 mark)
In a
binomial experiment,
A the probability of success does not change from trial to trial
B the probability of success does change from trial to trial
C can be applied to an infinite number of trials
D each trial can be depended on other trials.
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