A leading medical journal claims that 68% of high school students experience anxiety just before an exam. A school counselor wants to conduct a survey to verify this with the students in her school and wants to do so with a margin of error (ME) of ±7%. What minimum sample size, rounded to the nearest whole person, does the counselor need to use?
Hint: ME=2+-*sqaure root p(1-p) over N, where is the yes proportion in the sample and N is the sample size.
A:N >or=175
B:N>or=178
C:N>or=200
D:N>or=262
