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# What Happens to Margin of Error with Sample Size Changes?

APSTAT-LLUKXB

In an effort to determine what percentage of teenagers text and drive at Griswold High School, a student randomly selected $50$ teenage drivers from Griswold and constructed a $95\%$ confidence interval. Suppose that the student decides to construct the $95\%$ confidence interval again, but this time she randomly selects $100$ students.

What would happen to the margin of error?

A

The margin of error would increase.

B

The margin of error would decrease.

C

The margin of error would not change.

D

Can't tell, because the margin of error varies from sample to sample.

E

Can't tell, because we don't know the point estimate from the samples.