User manual - Examples 3

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
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; p = 0.48 when x = 1; p = 0.16 when x = 2
x = 0 x = 1
x = 2