Disk drives have been getting larger. their capacity is now often given in terabytes (tb) where 1 tbequals1000 gigabytes, or about a trillion bytes. a survey of prices for external disk drives found the data shown to the right. for this data, we want to predict price from capacity. complete parts a through h. ind the slope estimate, b 1

You are thinking of making your mansion more energy efficient by replacing some of the light bulbs with compact fluorescent bulbs, and insulating part or all of your exterior walls. each compact fluorescent light bulb costs $4 and saves you an average of $2 per year in energy costs, and each square foot of wall insulation costs $1 and saves you an average of $0.20 per year in energy costs.† your mansion has 150 light fittings and 3000 sq ft of uninsulated exterior wall. to impress your friends, you would like to spend as much as possible, but save no more than $750 per year in energy costs (you are proud of your large utility bills). how many compact fluorescent light bulbs and how many square feet of insulation should you purchase? how much will you save in energy costs per year? (if an answer does not exist, enter dne.)

Emily spent her summer vacation in buenos aires, argentina, where she got plastic surgery for a fraction of what it would cost in the united states. this is an example of:

True or false: a fitted model with more predictors will necessarily have a lower training set error than a model with fewer predictors.