The Firearms data file at the text website shows U.S. statewide data on x = percentage of people who report owning a gun and y = firearm death rate (annual number of deaths per 100,000 population), from www.cdc.gov.

(a) Find the prediction equation, and interpret.

(b) The correlation is 0.70.

Identify an outlier, and show that r = 0.78 when you remove this state from the data file.