week 7 probability

Question 1

probability ranges from

Answer 1

0-1

Question 2

mutually exclusive

Answer 2

occurrence of one event precludes the occurrence of another event - cannot be a part of multiple conditions

Question 3

independent events

Answer 3

occurrence of one event has no effect on the probability of occurrence of another effect eg rolling a dice

Question 4

additive rule for mutually exclusive events

Answer 4

the probability of occurrence of one event or another is equal to the sum of their separate probabilities

Question 5

multiplicative rule of independent events

Answer 5

the probability of the joint occurrence of 2 or more independent events is the product of their individual probabilities

Question 6

what Is the ‘and’ rule

Answer 6

work out the probability of 2 events happening you MULTIPLY probabilities

Question 7

what is the ‘or’ rule

Answer 7

to work out the probabilities of either of 2 events, you ADD probabilities

Question 8

what Is the additive rule if events are NOT mutually exclusive

Answer 8

probability of the occurrence of some particular events is included twice, so one must subtract it from the total probability

Question 9

multiplicative rule if events are NOT independent

Answer 9

conditional probability - probability of one event given the occurrence of another

Question 10

combination

Answer 10

number of ways to arrange a subset of objects

Question 11

binomial distribution

Answer 11

calculates the probability of getting exactly
r successes in n independent trials of an experiment, where the probability of success in a single trial is p

Question 12

when number of events is large, binomial distribution is…

Answer 12

equal to the normal distribution