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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
aw
cw
.ew
1(None)c
4 1(CALC)
i
cc
bw
ccc
1(CALC)
i
cc
cw
ccc
1(CALC)
Result Screen
Results: p = 0.36 when
x
= 0
x
= 2
59
examples
x
x
= 0; p = 0.48 when
x
= 1; p = 0.16 when
= 2
x
= 1
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