Express the confidence interval (0.029,0.113) in the form of p−E<p<p+E.

Answer 1

Given the interval notation (0.029,0.113)

To get the value of p, first get the average of 0.029 and 0.113.

p = (0.029 + 0.113)/2 = 0.071

Now you can you either p-E = 0.029 or p+E = 0.113 to solve for E.

0.071 + E = 0.113

E = 0.042

Therefore p-E < p < p+E is the same as

0.029 < P < 0.113, where p= 0.071

Answer 2

The margin of error (E) is one half of the length of the confidence interval: (upper limit - lower limit)/2.

The point estimate (p) is the average of the upper and lower limits: (upper limit + lower limit)/2.