Express the confidence interval in the form of $\hat{p}$ ± E.
-$- 0.128

Question

Express the confidence interval in the form of $\hat{p}$ ± E.
-$- 0.128 < p < 1.212$
A)$\hat { p }  = 0.542 \pm 0.4$
B) $\hat { p } = 0.542 - 0.67$
C) $\hat { p } = 0.67 \pm 0.4$
D) $\hat { p } = 0.542 \pm 0.67$

Quizplus · Accepted Answer

The confidence interval is given by $\hat{p}$ ± E, where $\hat{p}$ is the sample proportion and E is the margin of error. The margin of error is half the width of the confidence interval, so E = (1.212 - 0.128) / 2 = 0.542. Therefore, the confidence interval is $\hat{p}$ ± 0.542.

Express the Confidence Interval in the Form Of p^\hat{p}p^​ ± E -

Express the Confidence Interval in the Form Of $\hat{p}$ ± E
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