sample space, i.e. finite, uncountably infinite, countably infinite.
(a) [2] Select a ball from an urn containing balls numbered 1 to 20. Note the number
on the ball.
(b) [2] A message is sent transmitted repeatedly over a noisy channel until an error-
free message arrives at the receiver. Count the number of transmissions required.
(c) [2] Pick two numbers at random between zero and one.
(d) [2] Determine the value of a voltage waveform at time ₁