Question

To start a petrol-driven lawnmower, a Superspark spark plug must produce 3 consecutive sparks to ignite the fuel. The spark plug is designed to produce 5 sparks per second, but the probability of a misfire (that is, no spark is produced during a 0.2-second interval) is 25%.

a) For 20 trials simulate the behaviour of the Superspark spark plug by showing how many fires and misfires are needed per cycle for the engine to start.

Answer 1

b) A spark plug is ‘reliable’ if the number of firings in a cycle is at least twice as many as the number of misfires in the same cycle. From your data determine the proportion of cycles which are reliable.

c) Because of consumer complaints of too many misfires, the Superspark spark plug was improved so that there is now only a 10% probability of a misfire. Unfortunately, however, the engine will still require two consecutive sparks to start. Repeat the simulation analysis as for a and b and discuss whether or not the consumer is better off with the new ‘improved’ Superspark spark plug.

Answer 2

Those are the only two examples for simulation.

Answer 3

dude, i need some time for this one..

Answer 4

no problem, but just reply even though I'm not here because I will be going out and I still want to know how to do it.

Answer 5

I also won't forget to give you a medal if you have the right solutions.

Answer 6

ha ha, not for model.. just because m in office right now and cannot spend like more than 5 minutes on a question.. will get back to u surely... Thanks