Oracle® Database 11g / 12c / 18c error codes ORA-40292: confidence level must be greater than 0 and less than 1

ORA-40292: confidence level must be greater than 0 and less than 1

Oracle Error Code: ORA-40292

Cause: The specified value for confidence level is out of range.

Action: Specify a value for confidence level in the range 0 < level < 1