Question

Use the given confidence interval to find the margin of error and the sample proportion. ​(0.764​,0.788​) Eequals nothing ​(Type an integer or a​ decimal.) ModifyingAbove p with caretequals nothing ​(Type an integer or a​ decimal.)

Answer 1

Solution :

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

Point estimate = = (0.764+0.788) / 2=0.776

Margin of error = E = Upper confidence interval - = 0.788-0.776=0.012

In the form of :

- E < p < + E is,

0.776 -0.012< p <0.776+0.012