Casio: From the main menu,
choose #2, STAT. In List 1, put the value(s) of k (the # of
successes) that you want the probability for. Then hit F5,
i.e. the DIST menu option. Hit F5 again, i.e. the BINM menu
option. Then hit F1, i.e. the Bpd menu option. Make sure Data
is selected as 'List,' and List is selected as 'List1.' Then enter
the number of trials n (Numtrial) and the probability of success
(p). Highlight Execute and hit F1, i.e. CALC. If you entered
a single k at the beginning, you will see the probability.
If you entered a list of k's, you will see the corresponding list
of probabilities for each k.
TI-83: Clear out the screen on the basic operations window.
Select DISTR, which is 2nd VARS. Scroll down to the choice "binompdf("
and select it. Enter the number of trials n, a comma, the
probability of success p, a comma, and the number of successes k,
and close the parentheses. Here's an example of what it should look
like:
binompdf(12, .8, 5)
Then hit enter to get the probability of 5 successes in 12 trials, when
the probability of one success of .8 .
Notice that the 3 values are ordered differently than in the book, which
presents it this way: b(n, k; p).