Although any confidence level can be chosen to construct a confidence interval, one of the more common values is:

What is the primary safety hazard with aluminum carbide?

a. In reactions with water, a toxic inhalation hazard is produced. b. In reactions with water, corrosive gas is produced is produced. c. In reactions with water, carbon monoxide is produced. d. In reactions with water, flammable methane is produced.

Wounds initially weep fluids called ____.

A. pus B. exudates C. felons D. lymph