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Statistics Help

Question: N=195 x=162 90% confidence what is the confidence interval for the population proportion  Edit

Answer: Answer: sample proportion = 162/195 = 0.83
Standard error = sqrt(0.83 x (1 - 0.83)/195) = 0.027
z-value for 95% CI = 1.964
So, 95% CI = (0.83 - 1.964 x 0.027 , 0.83 + 1.964 x 0.027) = (0.777 , 0.883)
  Edit


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