Determine if the following scenarios involve an observational study or an experiment. Make sure your answers are legible and spelled correctly. A team of ecologists determines the different species of frogs that live in the local swamplands. A medical researcher divides patients into a treatment group and a control group to determine the effect of a new drug on overall cholesterol levels in patients. A medical insurance company determines the average cost to cover a tooth extraction procedure over the past 3 years.
Determine if the following scenarios involve an observational study or an experiment. Make sure your answers are legible and spelled correctly.
-
A team of ecologists determines the different species of frogs that live in the local swamplands.
-
A medical researcher divides patients into a treatment group and a control group to determine the effect of a new drug on overall cholesterol levels in patients.
-
A medical insurance company determines the average cost to cover a tooth extraction procedure over the past 3 years.
-
As part of a medical study to determine the effectiveness of a new technique for abdominal surgery, patients undergo the surgery with the new technique or with a traditional technique. The recovery time from surgery is then compared for the two different techniques.
-
The general manager of a baseball team determines the on-base percentage (OBP) for his players over the past two seasons.
-
A dietitian examined the effectiveness of a weight-loss program by randomly selecting 1,000 different subjects who already completed that program. Each subject was asked to self-report his or her weight before starting the diet and after completing it.
Step by step
Solved in 4 steps
