Texas Instruments TI-83 PLUS - Manual (Page 433)

TI-83 Plus Inferential Statistics and Distributions 430
Ü pdf( x , numerator df , denominator df )
Note: For this example,
Xmin = 0
Xmax = 5
Ymin = 0
Ymax = 1
Ü cdf(
Ü cdf( computes the Û distribution probability between lowerbound and
upperbound for the specified numerator df (degrees of freedom) and
denominator df . numerator df and denominator df must be integers >0.
Ü cdf( lowerbound , upperbound , numerator df , denominator df )
binompdf
binompdf( computes a probability at x for the discrete binomial
distribution with the specified numtrials and probability of success ( p ) on
each trial. x can be an integer or a list of integers. 0 
p
 1 must be true.
numtrials must be an integer > 0. If you do not specify x , a list of