def CredibleInterval(self, percentage=<NUM_LIT>):
prob = (<NUM_LIT:1> - percentage / <NUM_LIT>) / <NUM_LIT:2><EOL>interval = self.Value(prob), self.Value(<NUM_LIT:1> - prob)<EOL>return interval<EOL>
Computes the central credible interval.

        If percentage=90, computes the 90% CI.

        Args:
            percentage: float between 0 and 100

        Returns:
            sequence of two floats, low and high