Question

A leading medical journal claims that 71% of roller-coaster riders experience extreme anxiety just before the ride begins. A popular theme park wants to conduct a survey to verify this with the patrons in the park and wants to do so with a margin of error (ME) of ±8%. What minimum sample size, rounded to the nearest whole person, does the theme park need to use?

N ≥ 75
N ≥ 150
N ≥ 118
N ≥ 129

Answer 1

A leading medical journal claims that 71% of roller-coaster riders experience extreme anxiety just before the ride begins. A popular theme park wants to conduct a survey with a margin of error of ±8%. The minimum sample size, rounded to the nearest whole person is:

Answer: N ≥ 129

I hope it helps, Regards.