Using the data file 'cardiac saw for chapter $13$ at smoked per dav ld dided by ialf$)$ as indepenident variables. heart attack for a $25$ year old who is ovenweight, smokes $15$ cigaremes a das and dorlky $20$ units of alcohol per week is approximately

$044$

$0\mathrm{.}55$

$\mathrm{.}012$

$097$