Casio FX-9750G plus User Manual page 337

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Perform the following key operation to display a graph.
J
cc
6(DRAW)
u u u u u Student-t distribution probability
t
Student- distribution probability calculates the probability of
falling between two specific values.
df + 1
Γ
2
p =
df
π
Γ
df
2
Perform the following key operations from the statistical data list.
5(DIST)
t
)
2(
2(tcd)
Data is specified using parameter specification. The following shows the meaning
of each item.
Lower ............. lower boundary
Upper ............. upper boundary
df
.................... degrees of freedom (
Execute .......... executes a calculation
Example To calculate Student-
parameter value
For this example, we will calculate Student-
probability when lower boundary = –2, upper boundary = 3, and
degrees of freedom = 18.
-cw
dw
biw
1(CALC)
prob ................ Student-
manuals search engine
∫
df+1
b
–
1 + x 2
2
dx
df
a
df
> 0)
t
distribution probability for a specific
t
distribution probability
Distribution
t
distribution data
a
: lower boundary
b
: upper boundary
t
distribution
18 - 8
309