## Plus Four Confidence Interval for Proportion Calculator

Plus Four Confidence Interval for Proportion Calculator Use this calculator to compute the plus four confidence interval for population proportion. Plus Four Confidence Interval Calculator Sample Size ($n$) Number of successes ($k$) Confidence Level ($1-\alpha$) Select90%95%98%99% Calculate Results Estimate of proportion: ($\hat{p}$) Standard Error of proportion: ($SE$) Z-critical value: ($Z_{\alpha/2}$) Margin of Error: ($E$) Lower …

## Plus Four Confidence Interval for Proportion examples

Plus Four Confidence Interval for Proportion Examples In this article we will discuss step by step examples to construct a plus four confidence interval for population proportion. Example 1 In a random sample of 60 students from a college, 32 opted mathematics as major subject. Using plus four method find a 95% confidence interval for …

## Plus Four Confidence Interval for Proportion

Introduction In this article we will discuss step by step procedure to construct a plus four confidence interval for population proportion. The plus four confidence interval for the population proportion can be used when the confidence coefficient is more than 90% and the sample size of the population is at least 10. Plus Four Confidence …