TI-83 Plus Inferential Statistics and Distributions 426
normalcdf(
normalcdf( computes the normal distribution probability between
lowerbound and upperbound for the specified mean
m
and standard
deviation
s
. The defaults are
m
=0 and
s
=1.
normalcdf(lowerbound,upperbound[,
m
,
s
])
invNorm(
invNorm( computes the inverse cumulative normal distribution function
for a given area under the normal distribution curve specified by mean
m
and standard deviation
s
. 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
m
=0
and
s
=1.
invNorm(area[,
m
,
s
])