Question

The general form of a confidence interval is inferred as ______________. A .Standard error ± Critical value × Statistic B. Statistic ± Critical value × Standard error C. Critical value ± Statistic × Standard error D. Statistic ± Standard error × Sample mean

Answer 1

B. Statistic ± Critical value × Standard error

Step-by-step explanation:

The confidence interval for the mean, for example, is calculated as

`\bar{x}\pm z_{(\alpha)/(2)}\frac{\sigma}{\sqrt[]{n}}`

Where x is the statistic, z is the critical value and σ/√n is the standard error, so the general form is

Statistic ± Critical value × Standard error