Answer:
(a) higher by 0.25%
Step-by-step explanation:
The error in the estimate is found by comparing the estimated rate to the actual rate.
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The rate of estimated closing costs is ...
(estimated cost)/(home cost) × 100% = 6375/170000×100% = 3.75%
The actual rate is 4.00%.
actual - estimate = 4.00% -3.75% = 0.25%
The actual closing costs were higher than the estimate by 0.25%.