A study of working actors looked at age and gender. One sample of 50 male actors had a mean age of 24 and a standard deviation of 2. The other sample included 50 female actors with a mean age of 35 and a standard deviation of 3. Estimate with 86% confidence the difference between the average ages of working male (μ1) and female (μ2) actors. Round answers to the nearest hundredth.