2.04.460 [Rule 43] Testimony by Experts

(a) If scientific, technical, or other specialized knowledge will assist the trier of fact to understand the evidence or to determine a fact in issue, a witness qualified as an expert by knowledge, skill, experience, training or education may testify in the form of opinion or other.

(b) The facts or data in the case, upon which the expert bases an opinion or interference may be those perceived by or made known to the expert at or before the hearing. If the facts or data are of such a type reasonably relied upon by experts in the particular field in forming opinions or inferences upon the subject, the facts or data need not be admissible in evidence.