Suppose that Elsa and Frank determine confidence intervals using the same confidence level, based on the same sample proportion. Elsa uses a larger sample size than Frank. How will midpoint and width of confidence intervals compare?

Answer Choices:

Same width, Frank has larger midpoint

Same midpoint and same width

Same midpoint, Frank has wider interval

Elsa has larger midpoint, wider interval

Frank has larger midpoint, wider interval

Same width, Elsa has larger midpoint

Same midpoint, Elsa has wider interval

Can you please help me understand this problem?