Express the confidence interval 0.319 < p < 0.488 in the form of p ± e.
( if i wanted to use my ti-84 calculator to find how to do this does anyone know what buttons i would need to use)

Step-by-step explanation:

The fundamental step would be to determine the values of p and E which i believe is the margin of error in this case. Consider the following two equations;

We simply add the two equations and solve for p;

We then substitute this value of p in either equation and solve for E;

Since we have both p and E, the confidence interval can thus be written as;

step-by-step explanation: