Question

Express the confidence interval 0.333 < p < 0.777 in the form p +/- E.

Answer 1

p= 0.555 ; E= 0.222; then we have 0.555 +/- 0.222

Explanation:

The confidence interval goes from 0.333 to 0.777.

To find the p, we need to locate the median of that series of numbers.

The median is 0.555 as is the middle value of that interval.

Now the E corresponds to the deviation or the Error that we can measure.

And since we know that our variance ranges between 0.333 and 0.777, we can sustract 0.333 to p and we can get 0.222. We can also check if we add 0.222 to p, and we can get 0.777.