A political candidate is anxious about the outcome of the next election. To have his next survey result produce 95% confidence interval with margin of error of no more than 0.03. How many eligible voters are needed in the sample?

The service department at a new car dealer checks for small dents in cars brought in for scheduled maintenance. It finds that 27 of 86 randomly- sampled cars have a dent that can be removed easily. The service department wants to estimate the percentage of all cars with these easily repaired dents. List and check the conditions, construct a plus-four confidence interval to estimate the percentage with 99% confidence, and write it in a complete sentence related to the scenario