Express the confidence interval 0.38 p 0.54 in the form of p^ ± e

So, we have the interval 0.38 < p < 0.54:

Assume that p is in the middle of the given interval:

p = (0.54-0.38) / 2 = 0.08

Then, e can be calculated as follows:

e = end of interval - p = 0.54 - 0.08 = 0.46

The required expression can be written as follows:

p ± e = 0.08 ± 0.46