Hi all,

I want to get the prediction intervals of the poisson probability distribution.

When I use the function predIntPois with this set of numbers `predIntPois(c(70,73,80,66,62,64,73))`

I get the error:

Error in ebinom(0, sum.x, ci = TRUE, ci.type = "two-sided", conf.level = 1 - :

'size' must be a postive integer at least as large as 'x'.

However if I change for example the last number of the set of numbers with 1 more or 1 less, I don't get an error. And it works perfectly. How is this possible?

`predIntPois(c(70,73,80,66,62,64, 72))`

## Results of Distribution Parameter Estimation

Assumed Distribution: Poisson

Estimated Parameter(s): lambda = 69.57143

Estimation Method: mle/mme/mvue

Data: c(70, 73, 80, 66, 62, 64, 72)

Sample Size: 7

Prediction Interval Method: conditional

Prediction Interval Type: two-sided

Confidence Level: 95%

Number of Future Observations: 1

Prediction Interval: LPL = 48

UPL = 88*

Hopefully someone can help me. Thanks!

Anne