The Binomial Distribution - Casio fx-3650P Programming Manual

26

The binomial distribution

Assume that the probability that a tossed coin will land showing "heads" is
probability for "tails" is (
times with "heads"-up, is:
x
f x ( ) (
= C p
m x
？→ Ａ：？→ Ｂ：？→ Ｘ：ＢCＸ × Ａ ＾ Ｘ（１－ Ａ）＾（Ｂ － Ｘ）→ Ｙ：Ｙ ＜ 34 STEP ＞
INPUT Ａ: throws Ｂ: probability of "heads" Ｘ: number of "heads"
For a coin with probability
find the probability of getting 3 "heads" out of 7 throws.
Prog 1
1 3 EXE
EXE
7
3 EXE
36
1 p –
). Then over tosses, the probability that the coin will land
m x –
)
1 p –
1
-- -
of landing "heads",
3
C：
nCr
S A
S A
S A
S A
p
, and that the
x
P1 P1 P2 P3 P4 D R G
P1 P1 P2 P3 P4 D R G
P1 P1 P2 P3 P4 D R G
P1 P1 P2 P3 P4 D R G