In all cases not otherwise provided for by statute or by these rules a presumption imposes on the party against whom it is directed the burden of proving that the nonexistence of the presumed fact is more probable than its existence.
Rule 301. Presumptions in general.
Neb. Rev. Stat. § 27-301 — under COURTS; RULES OF EVIDENCE.
Neb. Rev. Stat. § 27-301