MSIS 3223 - EXAM 2 questions and
answers graded A+
Probability - correct answer ✔✔The likelihood that an outcome occurs
Experiment - correct answer ✔✔The process that results in an outcome
Outcome - correct answer ✔✔Result of an experiment that can be observed
Sample space - correct answer ✔✔The collection of all possible outcomes of an experiment
Event - correct answer ✔✔A collection of one or more outcomes from a sample space
Complement of an event - correct answer ✔✔All possible outcomes that are not in the event
Union of events - correct answer ✔✔If the notation (A and B) represents the intersection of
events A and B, the collection of all outcomes that belong to either A or B or to both A and B
Non-mutually exclusive events - correct answer ✔✔If the notation (A and B) represents the
intersection of events A and B, the collection of all events that belong to both A and B
Combinations - correct answer ✔✔Unique outcomes that must be counted when order does
not matter
Permutations - correct answer ✔✔The outcomes that are counted when order does matter
, Classical definition of probability - correct answer ✔✔If the process that generates the outcome
is known, probabilities can be deduced from theoretical arguments
Relative frequency definition of probability - correct answer ✔✔Probabilities are based on
empirical data; the probability is simply the relative frequency associated with that outcome
Subjective definition of probability - correct answer ✔✔Probabilities are based on judgment
and experience
Joint probability - correct answer ✔✔The probability of the intersection of two events
Marginal probability - correct answer ✔✔The probability of an event irrespective of the
outcome of the other joint event
Conditional probability - correct answer ✔✔The probability of occurrence of one event A, given
that another event B is known to be true or has already occurred
Independent events - correct answer ✔✔Two or more events in which the outcome of one
event does not affect the outcome of the other event(s)
Random variable - correct answer ✔✔A numerical description of the outcome of an experiment
Discrete random variable - correct answer ✔✔Variable where the number of outcomes can be
counted and each outcome has a measurable and positive probability
Continuous random variable - correct answer ✔✔A random variable that may have outcomes
over one or more continuous intervals or real numbers
answers graded A+
Probability - correct answer ✔✔The likelihood that an outcome occurs
Experiment - correct answer ✔✔The process that results in an outcome
Outcome - correct answer ✔✔Result of an experiment that can be observed
Sample space - correct answer ✔✔The collection of all possible outcomes of an experiment
Event - correct answer ✔✔A collection of one or more outcomes from a sample space
Complement of an event - correct answer ✔✔All possible outcomes that are not in the event
Union of events - correct answer ✔✔If the notation (A and B) represents the intersection of
events A and B, the collection of all outcomes that belong to either A or B or to both A and B
Non-mutually exclusive events - correct answer ✔✔If the notation (A and B) represents the
intersection of events A and B, the collection of all events that belong to both A and B
Combinations - correct answer ✔✔Unique outcomes that must be counted when order does
not matter
Permutations - correct answer ✔✔The outcomes that are counted when order does matter
, Classical definition of probability - correct answer ✔✔If the process that generates the outcome
is known, probabilities can be deduced from theoretical arguments
Relative frequency definition of probability - correct answer ✔✔Probabilities are based on
empirical data; the probability is simply the relative frequency associated with that outcome
Subjective definition of probability - correct answer ✔✔Probabilities are based on judgment
and experience
Joint probability - correct answer ✔✔The probability of the intersection of two events
Marginal probability - correct answer ✔✔The probability of an event irrespective of the
outcome of the other joint event
Conditional probability - correct answer ✔✔The probability of occurrence of one event A, given
that another event B is known to be true or has already occurred
Independent events - correct answer ✔✔Two or more events in which the outcome of one
event does not affect the outcome of the other event(s)
Random variable - correct answer ✔✔A numerical description of the outcome of an experiment
Discrete random variable - correct answer ✔✔Variable where the number of outcomes can be
counted and each outcome has a measurable and positive probability
Continuous random variable - correct answer ✔✔A random variable that may have outcomes
over one or more continuous intervals or real numbers
