Plato !
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  .

Step-by-step explanation:

Given : The sample size : n=30, it means the sample is large , so we apply z-test. [If n ≥ 30 then we apply z-test]

The proportion of customers surveyed were satisfied with the service offered :

Significance level :

Critical value :

Margin of error :-

i.e.

step-by-step explanation:

correct

step-by-step explanation: