Normal distribution

There are 4 NRICH Mathematical resources connected to Normal distribution
Normal intersection
problem

Normal intersection

Age
16 to 18
Challenge level
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Explore the intersection possibilities for normal pdfs.
Aim high
problem

Aim high

Age
16 to 18
Challenge level
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How do you choose your planting levels to minimise the total loss at harvest time?
Over-booking
problem

Over-booking

Age
16 to 18
Challenge level
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The probability that a passenger books a flight and does not turn up is 0.05. For an aeroplane with 400 seats how many tickets can be sold so that only 1% of flights are over-booked?