1

A veterinary study evaluates a new medication for mange in dogs. (Mange is a skin disease

caused by a parasite.) 50 dogs participate in the study. Half the dogs are randomly assigned

to get the new medication and the other half are randomly assigned to not be treated. At the

end of the study a veterinary technician examines the dogs' skin to see how well they are

doing.

This is a controlled experiment. TRUE FALSE

This study will probably have a problem with response bias. TRUE FALSE

This study will likely have a problem with a lurking variable. TRUE FALSE

2

A student wants to know how satisfied Mission College students are with their college. (This

happens before the pandemic.) She stops every 20

th

student on campus to ask them questions

about student satisfaction.

This is a systematic sample (sequential sample). TRUE FALSE

3

A psychological researcher offers communications training to a group of college students. The

students are free to accept or reject the training. One month later, after the training, the

students' communication skills are evaluated. The students know whether they got the

training.

This is a controlled experiment (designed experiment). TRUE FALSE

This is a blind study. TRUE FALSE