A-Level
CAIE
Mathematics
May 2025
QP-202505-Mathematics-P61 · Question 1
Question (excerpt):
9709/61/M/J/25 © UCLES 2025 1 It is known that 1% of houses in a certain area have a wind turbine. A random sample of 400 houses in this area is chosen for a survey on domestic heating. The number of …
9709/61/M/J/25 © UCLES 2025 1 It is known that 1% of houses in a certain area have a wind turbine. A random sample of 400 houses in this area is chosen for a survey on domestic heating. The number of …
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