More on Chapter 11: Discrete Random Variables

The complete solutions to all exercises 11.1 to 11.5 inclusive have now been posted to the Maths Methods Wiki. Remember to write the appropriate formula at the start of each problem as it will embed these in your mind – recall in exams will then be much easier. (…and yes I know it is tedious but it will pay off in the end!)

Remember to do some problems manually so as to prepare for the no-technology exam. Also you need to be very familiar with how to use the binompdf and binomcdf function and when each of these is the appropriate function to us. They can be input manually using the ALPHA key or you can find then using the CATALOG and F3 keys. Also when inputting matrices into the Ti89 remember to use square brackets. eg [[5,3][4,9]] is how a 2×2 matrix would be input.

Next Tuesday we start Chapter 12 on Continuous Random Variables.


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