59
examples
Example
20 white marbles and 30 red marbles are placed into a container. One
marble is taken out of and then replaced into the container, and then
another marble is removed. Calculate the probability of a white marble
being picked 0, 1, and 2 times.
Procedure
1
m
STAT2
2
5
(DIST)
f
(Binmal)
b
(P.D)
3
2
(VAR)
c
a
w
c
w
.e
w
1
(None)
c
4
1
(CALC)
i
cc
b
w
ccc
1
(CALC)
i
cc
c
w
ccc
1
(CALC)
Result Screen
Results: p = 0.36 when
x
= 0; p = 0.48 when
x
= 1; p = 0.16 when
x
= 2
x
= 0
x
= 1
x
= 2
