DrDominguez Conducted a Study of Children with Attention-Deficit/hyperactivity Disorder

question 42

Multiple Choice

Dr.Dominguez conducted a study of children with attention-deficit/hyperactivity disorder.She developed a new medication that was significantly better than placebo in treating the disorder,but this effect was not found in a similar study conducted in another laboratory.Dr.Dominguez's study has __________ internal validity and __________ external validity.

• A)high; high
• B)high; low
• C)low; high
• D)low; low

Understand the concept of the crossover rate and its significance in comparing projects.

Understand and apply Pareto analysis in identifying major causes of problems from a given dataset.

Calculate the Quality loss function using specific provided data.

Construct conventional cause-and-effect diagrams to analyze various service quality issues.