Defendants Gary Ellis and Marty Withers appeal from burglary convictions, claiming that the trial court erred in several respects: first, in denying their motion to sever their trials; second, in admitting lay opinion testimony; third, in denying their motion to arrest judgment; and fourth, in refusing their requested “alternative reasonable hypothesis” jury instruction. Finally, Ellis and Withers claim that the cumulative effect of the errors constitutes adequate ground for reversal. We affirm.
At four o'clock in the morning, police officers responded to a burglary report. The evidence of burglary at the residence was a broken window, muddy footprints below the window on the outside of the house, similar footprints inside, and an opened interior door. In addition, the first officer at the scene noticed a distinctively marked car driving slowly past the house and then accelerating. He gave a description of the car to other officers and requested that they attempt to locate it. Shortly after hearing the description, Officer Schoney began following a car matching the description. He lost sight of it for fifteen to twenty seconds, and when he saw the car again, it was parked on the side of the street. Ellis and Withers were inside and appeared to be asleep. They were roused, questioned, and subsequently arrested and charged with burglary. Although Ellis and Withers made a motion to sever their trials, they were tried together and convicted.
Ellis and Withers’ first claim on appeal is that the trial court erred in denying their motion to sever and in subsequently admitting their prior statements into evidence at their common trial in a form not subject to cross-examination. They contend that the trial court thereby denied their right to confrontation under article I, section 12 of the Utah Constitution and under the sixth amendment to the federal constitution. U.S. Const, amend. VI; Utah Const, art. I, § 12.
The statements in question came into evidence during arresting officer Schoney’s testimony. 1 Schoney said that after Ellis and Withers had gotten out of the parked car, he asked each “what he was doing sleeping in the back of that vehicle at that time.” According to Schoney, Withers stated that “he had been asleep in the back seat of the vehicle since about midnight that evening” and that the car “had been parked there since approximately midnight.” Ellis, on the other hand, told Scho-ney that “he’d been in the vehicle and the vehicle had been parked there for approximately ten to fifteen minutes.”
*190
Ellis and Withers rely on
Bruton v. United States,
Bruton
does not bear the construction that Ellis and Withers urge. The Supreme Court held that when there is a substantial risk that the jury in a joint trial will use extrajudicial statements made by a nontestifying codefendant to determine another codefendant’s guilt, the admission of the former’s confession violates the latter’s sixth amendment right to confrontation.
Id.
at 126,
Ellis and Withers’ second claim on appeal is that even if it was not constitutional error to admit the statements, the trial court abused its discretion when it denied defendants’ motion to sever. Under Utah Rule of Criminal Procedure 9(b), defendants will be tried jointly unless the court in its discretion orders separate trials. Rule 9(d), however,
requires
separate trials if it appears that the defendants will be prejudiced by joinder. Even if a trial court errs in denying a request for severance under rule 9, we will disregard the error unless it affects the substantial rights of the defendant. Utah R.Crim.P. 30(a). The substantial rights of a defendant are affected if we are persuaded that had the court granted a severance, an outcome more favorable to the defendant would have been reasonably likely. Otherwise, the error must be considered harmless.
State v. Knight,
The question then is whether the trial court’s refusal to sever was sufficiently prejudicial to require reversal. We think that it was not. Both Ellis and Withers have failed to establish a reasonable likelihood of a more favorable outcome if the court had granted a severance and had excluded the conflicting statements.
Ellis and Withers’ third claim is that the trial court erred when it admitted the lay opinion testimony of Bruce Austin. Mr. Austin, a security guard and former police officer, was one of the first to arrive at the scene. He examined the premises and discovered two sets of footprints in the mud beneath the broken window, as well as footprints inside the house leading away from the broken window. During his testimony, Mr. Austin compared the footprints outside the house to those inside. He said that one exhibit, a photograph of a footprint “with the distinctive heel marking appeared to be the one on the inside of the carpet.” The trial court admitted the testimony, reasoning that a witness is allowed to testify from personal experience and observation.
*191 Based on that testimony, Ellis and Withers contend that Mr. Austin gave an opinion which, as a lay witness, he was not qualified to give. They also argue that the slight probative value of the opinion was far outweighed by the danger that the jury construed it as that of an expert and gave it undue weight.
Rule 701 of the Utah Rules of Evidence allows a lay witness to give an opinion when it is rationally based on the witness’s perception and helpful to a clear understanding of the testimony or the determination of a fact in issue. Utah R.Evid. 701. It is difficult to understand how Mr. Austin’s lay testimony in the form of an opinion became expert testimony. Simply because a question might be capable of scientific determination, helpful lay testimony touching on the issue and based on personal observation does not become expert opinion. It is true that “if [a question] is capable of scientific determination, then expert testimony is admissible with respect to it,”
Roods v. Roods,
Ellis and Withers’ fourth claim is that the trial court should have granted their motion to arrest judgment because there was insufficient evidence to sustain their convictions. We have reviewed the evidence and find this contention to be without merit.
Ellis and Withers’ fifth claim is that the trial court erred in denying their proposed “reasonable alternative hypothesis” instruction, because the State’s case was based entirely on circumstantial evidence.
State v. Shaffer,
Finally, Ellis and Withers claim that the cumulative effect of the assigned errors constitutes reversible error. This claim is without merit. “ ‘Cumulative error’ refers to a number of errors which prejudice [a] defendant’s rights to a fair trial.”
State v. Rammel,
We have considered Ellis and Withers’ other assignments of error and find them to be without merit. Their convictions are affirmed.
Notes
. Ellis and Withers do not claim that the statements themselves were improperly admitted.
