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.
See also: Al Gore and information technology and Al Gore and the environment. Gore began serving in the U.S. Congress at the age of 28 and stayed there for the next 16 years, serving in both the House (1977â85) and the Senate (1985â93). Gore spent many weekends in Tennessee, working with his constituents.