Introduction > Step-by-Step Statistics > Gentle Introduction > Probabilities and Confidence Intervals > Calculating Probabilities

Calculating Probabilities

You have a tropical fish tank that contains 21 Neon tetras (Paracheirodon innesi) and four Clown Loach (Chromobotia macracanthus). If you captured one in a net, what is the probability of it being a clown loach?

You accidentally add your three Maris Piper seed potatoes to a bag of 50 King Edwards. What is the probability of you picking out a Maris Piper?

The zookeeper has left the cage doors open and the two male Siberian tigers (Panthera tigris altaica) escape into the female compound, which contains 20 animals. What is the probability of the first tiger you catch being male?

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