Troubleshooting - A Guide to MATLAB for Beginners and Experienced Users - page 275

disp([k + 1, sum(T)])
end

1.0000 6.1196

2.0000 6.4000

3.0000 6.8358

4.0000 6.1885

5.0000 6.0192

Multiplying each of these by $10,000 gives the portfolio amounts for the
five scenarios. Not surprisingly, all are less than what one obtains by
investing the original $50,000 all at once. But in this model it matters
where you enter the business cycle. It's clearly best to start your
investment program when a recession is in force and end in a boom.
Incidentally, the bank model yields in this case

(1/.08)*(((1.08)ˆ6) - 1) - 1

ans =
6.3359

which is better than the results of some of the previous investment models
and worse than others.

Problem 3

(a)

First we define an expression that computes whether Tony gets a hit or
not during a single at bat, based on a random number chosen between 0
and 1. If the random number is less than or equal to 0.339, Tony is
credited with a hit, whereas if the number exceeds 0.339, he is retired by
the opposition.

Here is an M-file, called atbat.m , which computes the outcome of a single
at bat:

%This file simulates a single at bat.
%The variable r contains a '1” if Tony gets a hit,
%that is, if rand <= 0.339; and it contains a ''0”
%if Tony fails to hit safely, that is, if rand > 0.339.
s = rand;