Question

What is the minimum sample size required to estimate the portion of drivers who are violating red signal at intersection, such as the error of estimate should not exceed 8% with 95% confidence level? assume K=1.64

Formula sheet X -8. N = PIK? NN (N-1) (N, -1), N,+ N₂-2 X = E(faiz) Degree of freedom: df - N,+N, -2 Degrees of Freedom 0.005

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Given data :- Confidence level = 95%. 87. Margin of enon = = 1.64 The minimum sample size is given by ko (I-o) (Hargin of ex

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