r - "car" package url out of date -


i trying follow along in statistical sleuth here teach myself regression analysis job in machine learning, when installing "mosaic" package requires "car" package. did install.packages(car) see url r trying open

http://cran.rstudio.com/bin/windows/contrib/3.1/car_2.0-20.zip

however, correct url (as seen here)

http://cran.r-project.org/bin/windows/contrib/3.1/car_2.0-21.zip

how can make r open custom url , install package?

i looked @ update.packages(), , there's update car package. 

> update.packages() #  ... # car : #  version 2.0-20 installed in /home/richard/r/x86_64-pc-linux-gnu-library/3.1  #  version 2.0-21 available @ http://cran.rstudio.com update (y/n/c)?

entering y, url in question appears in download message

update (y/n/c)?  y # trying url 'http://cran.rstudio.com/src/contrib/car_2.0-21.tar.gz' # content type 'application/x-gzip' length 584149 bytes (570 kb) # opened url # ================================================== # downloaded 570 kb

so install car first, try mosaic


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