Outside Magazine tested 10 different models of day hikers and backpacking boots. The Boots data show the upper support and price in dollars for each model tested. Upper support was measured using a rating from 1 to 5, with a rating of 1 denoting average upper support and a rating of 5 denoting excellent upper support. Find a regression the explains the boot price by the upper support rating. The coefficient of support shows
a. for each unit increase in the support index the price will tend to increase by over $31.
b. price is not sensitive to the support index.
c. that the confidence interval is wide
d. for each dollar increase in price the support index wil tend to increase by over 3.