MSIS 3223 - Exam 2 (Chapters 5-9)
T/F: Probability is the likelihood that an outcome occurs. - correct answer True.
T/F: The union of two events contains all outcomes that belong to either the two
events. - correct answer True.
T/F: Conditional probability is the probability of occurrence of one event 'A' given
that another event 'B' is known to be true or has already occurred. - correct
answer True.
T/F: A probability distribution is the characterization of the possible values that a
random variable may assume along with the probability of assuming these
values. - correct answer True.
T/F: A random variable is a numerical description of the outcome of an
experiment. - correct answer True.
T/F: The expected value of a random variable corresponds to the notion of the
median for a sample. - correct answer False.
T/F: The normal distribution is a continuous distribution that is described by the
familiar bell-shaped curve and is perhaps the most important distribution used in
statistics. - correct answer True.
T/F: The triangular distribution is defined by the three parameters: the mean,
median, and mode. - correct answer False.
T/F: Higher variance implies low uncertainty. - correct answer False.
T/F: Probability is the likelihood that an outcome occurs. - correct answer True.
T/F: The union of two events contains all outcomes that belong to either the two
events. - correct answer True.
T/F: Conditional probability is the probability of occurrence of one event 'A' given
that another event 'B' is known to be true or has already occurred. - correct
answer True.
T/F: A probability distribution is the characterization of the possible values that a
random variable may assume along with the probability of assuming these
values. - correct answer True.
T/F: A random variable is a numerical description of the outcome of an
experiment. - correct answer True.
T/F: The expected value of a random variable corresponds to the notion of the
median for a sample. - correct answer False.
T/F: The normal distribution is a continuous distribution that is described by the
familiar bell-shaped curve and is perhaps the most important distribution used in
statistics. - correct answer True.
T/F: The triangular distribution is defined by the three parameters: the mean,
median, and mode. - correct answer False.
T/F: Higher variance implies low uncertainty. - correct answer False.
