An experienent to test the effectivevess of regalar treatments with fluoride vamish to reduce tooth decay involved 36 volunteers who had half of their teeth (the right side or left sidn, deterrined by...

Extracted text: An experienent to test the effectivevess of regalar treatments with fluoride vamish to reduce tooth decay involved 36 volunteers who had half of their teeth (the right side or left sidn, deterrined by a coin fipi paited with a fluoride varnish evey si mowth for 5 years. At the nd of the treatements, the nunber of new cavities durine the treatenent period was conpared on treatnent fuoride varmishi side versus the control ino fluoride vamish side. The appropriate statistical test for analaing the results of this experiment is O Piredt tA for a man diference O Pne wele tt tora pooulaon m Two samolettet for a oference in mears O Pre wmole tefor a pooulaonrroporton O fw samoe tttor a derence in proportons