[R-sig-Debian] problem with address for backporr repositories

[hugo]

I tried to add the following instruction:

|deb https://cran.r-project.org/ trsuty-backports main restricted universe|

to: /etc/apt/sources.list
  When I updated my apt-get system I received an HttpError 404

Then I changed the address to:

|deb https://cran.r-project.org/ trusty-backports main restricted 
universe receiving: HttpError 404 |

|The address was taked from: https://cran.r-project.org/ Index |of 
/bin/linux/ubuntu

||

|What is the correct address to backports?

sincerely

hubabe
|

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