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problem
Flipping coins
A coin is flipped 4 times. What is the probability of getting heads at least 3 times?
problem
Swapping sweets
If two girls each take a sweet from each other's bags, what is the probability that they end up with what they started with?
problem
XOXOXO
6 tiles are placed in a row. What is the probability that no two adjacent tiles have the same letter on them?
problem
Favourite
Into the exponential distribution
Get into the exponential distribution through an exploration of its
pdf.
problem
Favourite
The twelve pointed star game
Have a go at this game which involves throwing two dice and adding their totals. Where should you place your counters to be more likely to win?
problem
Favourite
Stats statements
Are these statistical statements sometimes, always or never true? Or it is impossible to say?
problem
Capture and recapture
How do scientists or mathematicians estimate the size of a population of wild animals?
problem
Favourite
Sociable cards
Move your counters through this snake of cards and see how far you can go. Are you surprised by where you end up?
problem
The wisdom of the crowd
Who's closest to the correct number of sweets in a jar - an individual guess or the average of many individuals' guesses? Which average?