; (2) the arbitrator exceeded the arbitrator’s powers; (3) the decision by the arbitrator is arbitrary or capricious; (4) the arbitrator conducted the hearing contrary to the provisions of this chapter or other laws or rules that apply to the arbitration so as to substantially prejudice the rights of a party; (5) there was partiality or misconduct by the arbitrator prejudicing the rights of a party; (6) the award was procured by corruption, fraud, or bias on the part of the arbitrator