A national survey of asthma conducted on May 1, 2012, obtained the following results for the state of Oklahoma: X = The number of residents with asthma Y = The population of the state on June 30, 2012, and all members of the population were considered at risk Z = The number of new cases of asthma diagnosed during 2012.The incidence rate of asthma during 2012 (per 100,000) would be expressed as:

Answer:The incidence rate per 100,000 = [tex]\frac{\textup{Z}}{\textup{Y}}\times100,000[/tex] Step-by-step explanation:Data provided:The number of residents with asthma = XThe population of the state on June 30, 2012 = YThe number of new cases of asthma diagnosed during 2012 = ZNow, The incidence rate is the rate or then frequency at which a disease occurs over a time periodTherefore, In the given questionThe incidence rate per 100,000 = [tex]\frac{\textup{number of new cases of asthma diagnosed during 2012}}{\textup{The population of the state on June 30, 2012}}\times100,000[/tex] orThe incidence rate per 100,000 = [tex]\frac{\textup{Z}}{\textup{Y}}\times100,000[/tex]