Chapter 8 Convidence Interval

Oct 2019
united states
Insurance companies are interested in knowing the population percent of drivers who always buckle up before riding

When designing a study to determine this population proportion, what is the minimum number of drivers you would need to survey to be 95% confident that the population proportion is estimated to within 0.02? (Round your answer up to the nearest whole number.)

Hello could someone told me if is any formula that I could use for this case.