Casio fx-991EX - Inverse Normal

fx-991EX Quick Start Guide 27
Press p one more time to calculate the probability
distribution table.
Notice how the small probabilities are expressed in proper
scientic notation!
INVERSE NORMAL
To calculate an Inverse Normal Distribution, press
i1(Select Type).
(“Editor” edits the previous PD’s data list.)
Select 3(Inverse Normal).
Input the values as shown to answer the question: “If the heights
of U.S. males are normally distributed with a mean of 70 inches
and a standard deviation of 4 inches, what range denes the
tallest 10% of U.S. males?”
Press p once more to reveal the result. To be in the top 10%
of U.S. males by height, a man must be over 75 inches (6’3”) tall.
DISTRIBUTION