Google Analytics Problems

I’m trying to install Google Analytics to my blog. I’ve tried the plugins, but none of them work, so I’ve resorted to trying to install it myself and I’m having problems. Anything wrong with this code?

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<script type="text/javascript" src="<?php bloginfo('template_url'); ?>/script.js"></script>
<script>
  (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-41502146-1', 'footballbettor.co.uk');
  ga('send', 'pageview');

</script>
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Thanks,
Pete