The confidence interval is 0.122<p<0.196
Confidence interval :
A confidence interval (CI) is a range of estimates for an unknown parameter in frequents statistics. The 95% confidence level is the most popular, however other levels, such 90% or 99%, are occasionally used when computing confidence intervals. The percentage of related CIs over the long run that include the parameter's actual value is represented by the confidence level. For instance, 95% of all intervals calculated at the 95% confidence level should include the parameter's actual value. The sample size, sample variability, and confidence level are all variables that have an impact on the CI's width.
Complete question:
Suppose a sample of 208 tankers is drawn. Of these ships, 175 did not have spills. Using the data, construct the 85 % confidence interval for the population proportion of oil tankers that have spills each month. Round your answers to three decimal places.
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