Simulation. A simulation imitates a real situation. It should act as a predictor of what would actually happen in practice. It is a model in which experiments are carried out so as to estimate what might happen in real life. Simulation using the Calculator.
0.000 and 0.999
all equally likely.
TOOL Using the random number function of the calculator.
Using the 3 digits of a random number. An odd digit will represent a boy and an even digit will represent a girl. Even and odd occur with equal probabilities same as boys or girls)
TRIAL Generate a random number to represent the three members of the family. Record the results.
Eg. 0.479 will be recorded as GBB (even, odd, odd)
Repeat the trial 10 times.
RESULTS BGB GGB BBB GBB GBG
GBB GGB BBG GBB BBB
CALCULATION Probability of a family being all the same sex is 0.2 (2 from 10)
Coming to school each day, Laura rides through 2 traffic lights. The probability that any one light is green is 0.3, and the probability that it is not green is 0.7
Design and carry out a simulation to estimate the probability that Laura will find that both lights are green.