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.
Q: Did Oliver North warn Al Gore about Osama bin Laden at Senate hearings in 1987? A: This ridiculous hoax has been circulating since 2001, even though the secretary of the U.S. Senate and North himself have debunked it.