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 0.04

601

Step-by-step explanation:

The formula to find the minimum sample size(n) , if the prior population proportion is unknown:

, where E = margin of error , = critical z-value for confidence level c.

Given : E  = 0.04

Z-value for 95% confidence = 1.96

So, the minimum sample size required =

Hence, the minimum sample size required = 601

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