The left tail of a density curve y=f(x) of a continuous random variable X cut off by a value x* of X is the region under the curve that is to the left of x*. The right tail cut off by x* is defined si...The left tail of a density curve y=f(x) of a continuous random variable X cut off by a value x* of X is the region under the curve that is to the left of x*. The right tail cut off by x* is defined similarly.
The left tail of a density curve y=f(x) of a continuous random variable X cut off by a value x* of X is the region under the curve that is to the left of x*. The right tail cut off by x* is defined si...The left tail of a density curve y=f(x) of a continuous random variable X cut off by a value x* of X is the region under the curve that is to the left of x*. The right tail cut off by x* is defined similarly.