In a research study, if we can not determine which variable is causing which, it is called the problem.

Astudy shows that an influenza vaccine is 71.4% effective in preventing a particular type of influenza. if 15,422 people receive the vaccine, how many would not be protected and would be likely to get infulenza?

2paragraphs choose one team sport and one individual sport. what are the advantages and disadvantages of having to play each of these sports in gym class?

Does nicotine show up in a drug test when u pee in the cup