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IB Maths AI SL 4.5 Probability basics Question Bank

Practise IB Mathematics SL/HL 4.5 by applying probability basics methods to exam-style questions.

Syllabus
First assessment 2021
Course
Mathematics: applications and interpretation SL
Level
SL

Exam points

  • identify the mathematical structure, variable or representation
  • select and apply the correct theorem, formula or algorithm
  • check the result using units, domain, graph or logical reasoning

SL 4.5—Probability basics question 1

[Maximum number: 2]

Elsie, a librarian, wants to investigate the length of time, T minutes, that people spent in her library on a particular day.

Find the probability a visitor spends at least 60 minutes in the library.

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