Let X be a random variable with the standard normal distribution. Find: P(X < - 2.57)
To find P(X < -2.57) for a standard normal distribution, we can use a standard normal table or a statistical calculator.
Using a standard normal table, we look up the value for -2.57 and find that the area to the left of -2.57 is approximately 0.0054.
Therefore, P(X < -2.57) is approximately 0.0054.