Variation 3 · answer guide
Binomial distribution — Probability statement
Question
Translate 'no more than 1% of flights overfull' into a statement about for a 350-seat flight.
This practice question was inspired by Question 14(d) in the 2022 NSW HSC Mathematics Extension 1 examination, © NESA. It is an original TestMum variation that practises the same mathematical idea, not an official NESA question.
Step by step
- State the final answer clearly in the form the question requested. or .
Common mistake: changing so many features that the new example no longer tests the same mathematical idea.
Verification: First modelling step before the normal work.
Any mark labels are a TestMum study aid, not an official NESA marking allocation.
← Back to 2022 HSC Extension 1 paper Question 14(d)