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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: , where is the yes proportion in the sample and N is the sample size.

N ≥ 175 N ≥ 178 N ≥ 200 N ≥ 262

 Jun 6, 2018

Help anyone

 Jun 6, 2018

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