Google have issued a line of code to adjust the bounce rate on their Analytics.
[CODE]
var _gaq = _gaq || [];
_gaq.push(['_setAccount', 'UA-XXXXXXX-1']);
_gaq.push(['_trackPageview']);
setTimeout("_gaq.push(['_trackEvent', '15_seconds', 'read'])",15000);
[CODE]

The last line is the one that adjusts the bounce rate.

However, my page code from Google is different. It doesn't have _gaq.push in it. Instead it just has ga
[CODE]
(function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){
(i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),
m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)
})(window,document,'script','//www.google-analytics.com/analytics.js','ga');
ga('create', 'UA-xxxxxxxxx', 'website.com');
ga('send', 'pageview');
[CODE]

Would I be right in thinking that the line of code for adjusting the bounce rate won't work with the code on my page? If so, can anyone suggest how that line of code should be rewritten so it will work with the code on my page?