Answer:
$27,800
Step-by-step explanation:
When a set of data is bell-shaped, the mean will be in the middle. A 95% confidence level means that $19,200 and $36,400 are located at 2 standard deviations from the mean. If you want to determine the mean, you have to add $19,200 + $36,400 = $55,600 and then divide by 2 = $27,800