Mathsercise-C Ready? Probability Here we go!

1 The probability of it raining is 0.3 What is the probability of it not raining? Question 2 1 – 0.3 = 0.7 Probability is between 0 and 1 So..the probability of something not happening is 1 – P(happening) Answer 1 Probability

2 A train can be early, on time, or late. The probability of it being late is 0.63, the probability of being early is 0.1 What is the probability of it being on time? Question 3 Answer 1 – 0.1 – 0.63 = 0.27 2 Probability

3 Here is a probability table of students favourite colours.. Question 4 Grey Colour Probability Blue Brown Pink 0.1 0.3 0.2 0.4 1.0 Work out the probability of choosing blue Answer 3 Probability

4 Here is a probability table of students favourite pets.. Start Animal Rabbit Dog Mouse Cat Probability 0.17 0.4 0.17 0.26 1.0 If the probability of the Rabbit and Mouse is the same, work out the missing values Answer 1 – 0.4 – 0.26 = 0.34 4 0.34 ÷2 = 0.17 Probability