Select the correct statement below. 1) Artificial intelligence is the science of enabling humans to simulate machine thinking. 2) Intelligent systems emulate and enhance human capabilities. 3) Machine learning allows systems to learn by imitating humans. 4) Predictive modeling helps build unexplained models. 5) Intelligent agents (also called 'bots') are used by users to control how programs are opened.

The 2007 nbi data were analyzed and the results made available oat the fhwa web site. using the fhwa inspection rations, each of the 599,766 highway bridges in the united states was categorized as structurally deficient, functionally obsolete, or safe. about 12% of the bridges were found to be structurally deficient, while 13.5% were functionally obsolete. a. what is the variable of interest to the researchers? b. is the variable of part a quantitative or qualitative?