A laboratory is testing a new blood pressure medication on 1…

A laboratory is testing a new blood pressure medication on 100 people with high blood pressure. They found that 75% of the participants had a large decrease in blood pressure, 20% had some decrease, 3% had no change, and 2% had a slight increase in blood pressure. What was/ were the variable(s) of interest in the study?

A company is only interested in hiring electricians if they…

A company is only interested in hiring electricians if they have finished their apprenticeship or have at least three years of other construction work experience. They note that 20% of the applicants have finished their apprenticeship but have no other experience, while 50% of the applicants have at least three years of construction work experience. What percent of the applications will the committee be interested in considering further for hiring?