Question

Express the confidence interval left parenthesis 0.077 comma 0.129 right parenthesis in the form of ModifyingAbove p with caret minus Upper E less than p less than ModifyingAbove p with caret plus Upper E.

Answer 1

Solution :

Point estimate = = (Lower confidence interval + Upper confidence interval ) / 2

Point estimate = = (0.077+0.129) / 2=0.103

Margin of error = E = Upper confidence interval - = 0.129-0.103=0.026

In the form of :

- E < p < + E is,

0.103-0.026 < p <0.103+0.026

0.077< p <0.129