Filter
Top Products
Press the number 2 key.
Type in the number -1.
Press the 2
nd
key and then the , (comma) key to get the
exponential sign E.
Type in 99, 0, 1) after the E.
Press the ENTER key.
The probability is .159.
Example: Finding the Area to the Right
To find the area to the right of a number a, type normalcdf(a, 1E99). The E is for scientific
notation, and is located above the comma key in the sixth row (where the label appears as EE).
The point of using 1E99 is that it is a quick way of typing a very large positive number, as if we
were entering 1 million.
Find the probability of getting a value to the right of 2.27 on the standard normal distribution.
Press the 2
nd
key and then the VARS key to get to the
DISTR page.
Press the number 2 key.
Type in the number 2.27 followed by a comma.
Type in the number 1.
Press the 2
nd
key and then the , (comma) key to get the
exponential sign E.
Type in 99, 0, 1) after the E.
Press the ENTER key.
The probability is .012.
41