Final answer:
The confidence interval (739.3, 845.5) can be expressed in the form of x ± margin of error as 792.4 ± 53.1.
Step-by-step explanation:
The confidence interval (739.3, 845.5) can be expressed in the form of x ± margin of error as 792.4 ± 53.1.
To find the margin of error, we subtract the lower bound from the upper bound and divide the result by 2. So, margin of error = (845.5 - 739.3) / 2 = 53.1.