(6) Records of regularly conducted activity. A memo, report, record, or data compilation, in any form, of acts, events, conditions, opinions, or diagnoses, made at or near the time by, or from info transmitted by, a person with knowledge, if kept in the course of a regularly conducted business activity, and if it was the regular practice of that business activity to make the memo, report, record, or data compilation, all as shown by the testimony of the custodian or other qualified witness, unless the source of info or the method or circumstances of preparation indicate lack of trustworthiness. The term "business" as used in this paragraph includes business, institution, association, profession, occupation, and calling of every kind, whether or not conducted for profit. For purposes of Mock Trial, police reports created in the regular course of the officer's duties may be entered as a record of regularly conducted activity if the report otherwise meets the requirements of this rule.