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.
A native of Tennessee, Al Gore served as vice president of the United States under President Bill Clinton from 1992 to 2000, after a long tenure in the U.S. House of Representatives and U.S. Senate. He lost a presidential bid to George W. Bush in 2000.