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March 18th, 2008, 04:36 PM  #1 
Newbie Joined: Mar 2008 Posts: 1 Thanks: 0  Need help with statistics
A reporter investigates speeding on roads in a country and finds a correlation of 0.967 between the number of speeding tickets and the numbers of miles of well paved roads. Assuming that the relation is linear, does it mean that there are more speeding tickets on well paved roads? A random sample of records of electricity usage of homes gives the amount of electricity used in July and size (in square feet) of 135 homes. A regression was done to predict the amount of electricity used (in kilowatt hours) from size. The residuals plot indicated that a linear model is appropriate. What units does the slope have? 
March 19th, 2008, 02:03 AM  #2 
Global Moderator Joined: Dec 2006 Posts: 20,096 Thanks: 1905 
What do you think the answers should be?


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