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Using the Action Menu

SbinomialCDf

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, pos [ ) ]

Example: To determine the binomial cumulative probability when lower value = 2, upper value = 5, numtrial value = 3, pos = 0.63

Menu Item: [Action][Distribution][binomialCDf]

For more information, see “Binomial Cumulative Distribution” on page 7-11-15.

SinvBinomialCDf

Function: Returns the minimum number of trials of a binomial cumulative probability distribution for specified values.

Syntax: invBinomialCDf(prob, numtrial value, pos [ ) ]

Important!

When executing the invBinomialCDf function the calculator uses the specified prob value and the value that is one less the prob value minimum number of significant digits (*prob value) to calculate minimum number of trials values. The results are assigned to the system variables xInv (calculation result using prob) and *xInv (calculation result using *prob). The invBinomialCDf function always returns the xInv value only. However, when the xInv and *xInv values are different, the warning message shown below appears showing both values.

The calculation results of invBinomialCDf 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 prob = 0.609, numtrial value = 5, pos = 0.63

Menu Item: [Action][Inv. Distribution][invBinomialCDf]

For more information, see “Inverse Binomial Cumulative Distribution” on page 7-11-16.

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