Casio fx-CP400 User Manual page 86

u binomialCDf [Action][Distribution/Inv.Dist][Discrete][binomialCDf]
Function: Returns the cumulative probability in a binomial distribution that the success will occur between
specified lower value and upper value.
Syntax: binomialCDf(lower value, upper value, numtrial value,
Calculation Result Output:
Example: To determine the binomial cumulative probability when lower value
= 2, upper value = 5, numtrial value = 3,
u invBinomialCDf [Action][Distribution/Inv.Dist][Inverse][invBinomialCDf]
Function: Returns the minimum number of trials of a binomial cumulative probability distribution for specified
values.
Syntax: invBinomialCDf(
Calculation Result Output: Inv, ½ Inv
Important!
When executing the invBinomialCDf, invPoissonCDf, invGeoCDf, or
invHypergeoCDf function, the ClassPad uses the specified
the value that is one less the
(½ value) to calculate minimum number of trials values. The results
are assigned to the system variables
and ½ (calculation result using ½
value only. However, when the
warning message shown nearby appears showing both values.
The calculation results of the function are integers. Accuracy may be reduced
when the first argument has 10 or more digits. Note that even a slight difference in calculation accuracy
affects calculation results. If a warning message appears, check the displayed values.
Example: To determine the minimum number of trials when
numtrial value = 5,
u poissonPDf [Action][Distribution/Inv.Dist][Discrete][poissonPDf]
Function: Returns the probability in a Poisson distribution that the success will occur on a specified trial.
Syntax: poissonPDf( ,
Calculation Result Output:
Example: To determine the Poisson probability when = 10,
u poissonCDf [Action][Distribution/Inv.Dist][Discrete][poissonCDf]
Function: Returns the cumulative probability in a Poisson distribution that the success will occur between
specified lower value and upper value.
Syntax: poissonCDf(lower value, upper value,
Calculation Result Output:
Example: To determine the Poisson cumulative probability when lower
value = 2, upper value = 3,
u invPoissonCDf [Action][Distribution/Inv.Dist][Inverse][invPoissonCDf]
Function: Returns the minimum number of trials of a Poisson cumulative probability distribution for specified
values.
Syntax: invPoissonCDf(
Calculation Result Output: Inv, ½ Inv
, numtrial value,
value minimum number of significant digits
(calculation result using
). The function always returns the
and ½
= 0.63
[ ) ]
= 2.26
, [ ) ]
[ ) ]
= 0.63
[ ) ]
value and
values are different, the
= 0.609,
= 6
[ ) ]
)
Chapter 2: Main Application 86