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Mathematical Methods — Question 2

QCAA 2022, Paper 1 · 1 mark

Q2 · 2022 · Technology-freeSimple familiar1 mark

QUESTION 2

A binomial random variable arises from the number of successes in nn independent Bernoulli trials. A context not suitable for modelling using a binomial random variable is recording the number of
(A)
heads when a coin is tossed 12 times.
(B)
left-handed people in a sample of 100 people.
(C)
times a player hits a target from 20 shots where each shot is independent of all other shots.
(D)
red marbles selected when three marbles are drawn without replacement from a bag containing four blue and five red marbles.
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