Computer programs are classified by

the length of the source code and by the

execution t ime. l$=>$rograms with more than

$150$ lines in t he source code are b ig $($ B $).$

Programs $\backslash$Vith $<150$ lines are little $($L$).$

Fast programs $($F$)$ run in less than $0\mathrm{.}1$ seconds.

Slow programs $($W$)$ r equire at least

$0\mathrm{.}1$ seconds. l$\backslash /$Ionitor a program executed

by a computer. Observe the length of the

source code and the run time. The probability

model for this experiment contains

the follo$\backslash$ving informat ion: P $[$LF$]=0\mathrm{.}5,$

P$[$BF$]=0\mathrm{.}2,$ and P $[$BW$]=0\mathrm{.}2.\backslash$i$\backslash !$hat is

the sample space of the experiment? Calculate

the fo llo,ving probabilities: P $[$W$],$ P$[$B$],$

and P$[$vV u BJ$.$