Participant in a sample population have an equal chance of being selected for the experiment, this is an example of ?
Control Group
Random Selection
Case Study
Double Blind
Patch over the eye Blind

This device blocks an opening along the base/floor of stairs or other walking or working surfaces where materials or body parts might otherwise inadvertently fall through. it should be 4 inches high, with not more than ¼ inch clearance above the floor

What do you think inspires people to come up with great inventions? explain in 4 sentences

Itscome to our attention that someone has been taking extra supply out of the supply cabinet for some time now and this is not allowed the officer manager says if this continues to happen we will have to put up security cameras this will come out of the office budget there for our paychecks make sure that you're only using me budget for the for your department