You Sample All 1000 People in the Population of Interest $\hat { p }$

question 73

Essay

You sample all 1000 people in the population of interest and find that $\hat { p }$ is 0.2. Why should you not use the margin of error formula to find a 95% confidence interval for p?

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Definitions:

Null Hypothesis

The hypothesis that there is no significant difference or effect, serving as the default assumption to be tested against the alternative hypothesis.

Population Proportions

The ratio of members in a statistical population that have a particular attribute or characteristic.

Type I Error

A statistical error that occurs when a true null hypothesis is incorrectly rejected.

Type II Error

The error that occurs when a statistical test fails to reject a false null hypothesis, incorrectly concluding that there is no effect or difference when there is.