38
% u
"
displays the
DISTR
menu, which has
the following distribution functions:
1: Normalpdf
Computes the probability density function
(
) for the normal distribution at a
specified
x
value. The defaults are mean
mu=0 and standard deviation sigma=1. The
probability density function (pdf) is:
2: Normalcdf
Computes the normal distribution probability
between LOWERbnd and UPPERbnd for
the specified mean mu and standard
deviation sigma. The defaults are mu=0;
sigma=1; with LOWERbnd =
M
1
E
99 and
UPPERbnd = 1
E
99. Note:
M
1
E
99 to 1
E
99
represents
M
infinity to infinity.
3: invNorm
Computes the inverse cumulative normal
distribution function for a given area under
the normal distribution curve specified by
mean mu and standard deviation sigma. It
calculates the
x
value associated with an
area to the left of the x value. 0
{
area
{
1
must be true. The defaults are area=1,
mu=0 and sigma=1.
4: Binompdf
Computes a probability at
x
for the discrete
binomial distribution with the specified
numtrials and probability of success (
p
) on
each trial.
x
is a non-negative integer and
can be entered with options of SINGLE
entry, LIST of entries or ALL (list of
probabilities from 0 to numtrials is returned).
0
{
p
{
1 must be true. The probability
density function (
) is:
