IB Maths AA HL Sl 4 5 Probability Basics Questions

Practise representing sample spaces and calculating probabilities, complements and expected frequencies from outcomes, events and relative-frequency data.

Exam points

Define trial, outcome, sample space, event and relative frequency, representing sample spaces with complete lists or tables.
Calculate P(A) = n(A)/n(U), complements and expected numbers of occurrences from a stated experiment or finite sample space.

[Maximum number: 2]

There are 75 players in a golf club who take part in a golf tournament. The scores obtained on the 18th hole are as shown in the following table.

Table for Question IB Maths AA HL Sl 4 5 Probability Basics Questions question 1 — IB Maths AA HL

One of the players is chosen at random. Find the probability that this player's score was 5 or more.

$\quad \mathrm{P}(5$ or more $)=\frac{29}{75}(=0.387)$
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[2 marks]

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IB Maths AA HL Sl 4 5 Probability Basics Questions question 1