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'Reaction Timer Timer' printed from http://nrich.maths.org/
problem introduces this interactivity which measures the
amount of time taken to react to a shape appearing on-screen:
This text is usually replaced by the Flash movie.
In this interactivity it is known that once a shape disappears an
internal timer begins. The time until the appearance of the next
shape is determined randomly through a clear, well-defined
statistical process which is unknown to us. From the moment that
this next shape disappears the timer resets and starts again; the
random process then again determines the time until the appearence
of the next shape. Familiarise yourself with the interactivity
before considering this question:
- Upon each shape disappearing there is a delay of a random
length until the appearence of the next shape. How might you design
an experiment to determine the nature of the random process giving
rise to the delay?
Once you have designed the experiment, perform it and analyse the
data. Can you produce a clear hypothesis as to the random process
giving rise to the delay?