Which of the Following Are Examples of Types of Research

Multiple Choice

Which of the following are examples of types of research questions that can be answered with a test of inference about independent variances? Select all that apply.

A) Does the variation in the time to complete a task different for subjects in a treatment group as compared to subjects in a control group?
B) Is variation in height different for children who drink the recommended number of glasses of water per day as compare to children who do not?
C) Is there a relationship between the variation of BMI in adults and weight in middle school?
D) Are there similar proportions of public institutions who declined in federal spending in 2000 as compared to 2010?