Question

A restaurant owner wants to determine the effectiveness of his servers. The owner conducted a survey by asking 30 customers about the servers' effectiveness, on a day when the restaurant had 450 customers. The owner found that 65% of those surveyed were satisfied with the service offered. Assuming a 95% confidence level, which of the following statements holds true?
A. As the sample size is appropriately large, the margin of error is ±0.171.
B. As the sample size is appropriately large, the margin of error is ±0.203.
C. As the sample size is too small, the margin of error cannot be trusted.
D. As the sample size is too small, the margin of error is ±0.203.

Answer 1

As the sample size is too small, the margin of error cannot be trusted.