### A Rainy Night in New Orleans

It was a rainy night in New Orleans;

I watched a young girl weeping

As her baggage was taken down.

It seems she'd lost her ticket

She begged them not to leave her there

With no sign of help in sight.

The bus driver had a face of stone

And his heart was surely the same.

"Losing your ticket's like losing cash money,"

He said, and left her in the rain.

Then an old Indian man stood up

And would not let him pass before

"How can you leave that girl out there?

You can't just leave her here.

You can't put her out in a city

Where she doesn't have a friend.

About the young girl's problem

And helped her put her baggage

In the overhead luggage space.

"the kindness you've shown tonight?

We're strangers who won't meet again

A mere 'thank you' doesn't seem right."

He said, "What goes around comes around.

What you give, you always get back;

What you sow, you reap in kind.

For by being kind to strangers,

### Shadow Dancers

### Probability Theory

*Ãž Experiment - Any operation / process that results in two or more outcomes.*

*Ãž Possible outcome – The result of a random experiment.*

*Ãž Event – One or more possible outcomes of an experiment or a result of a trial or an observation.*

*Ãž Elementary Event – a single possible outcome of an experiment.*

*Ãž Compound Event – When two or more events occur in connect with each other.*

*Ãž Favourable event – the number of outcomes that result in the happening of a particular event.*

*Ãž Exhaustive events – the total number of possible outcomes in any trial.*

*Ãž Complementary events - the number of unfavourable cases in an experiment.*

**THEORIES (OR TYPES) OF PROBABILITY**

P = P(E) = f/N = Number of favourable outcomes

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**Relative Frequency of Occurrence Approach**

The relative frequency of occurrence approach defines the probabilities as either:

v The proportion of times that an event occurs in the long run when the conditions are stable, or

v The observed relative frequency of an event in a very large number of trials.

v The probability of an entire sample space is 1. Mathematically P(S)=1.