The t test is a two-tailed test because the tail of the distribution on each side of the mean is analyzed. For many laboratory measurements or clinical trials, one would want a two tailed test because the value or the outcome could be either above or below the mean.
Al Gore, in full Albert Arnold Gore, Jr. (born March 31, 1948, Washington, D.C., U.S.), 45th vice president of the United States (1993â2001) in the Democratic administration of President Bill Clinton.
Paul Cusack, Kristin Gore, Tipper Gore and Al Gore are pictured together. Her own marriage lasted four years - ending in June 2009, before her parents split less than a month after celebrating their 40th anniversary.