Let ​(4.0​, 8.32​) represent an interval on the number line. Complete parts​ (a) and​ (b) below. ​(a) Find the value that is in the middle of the interval. The value is nothing. ​(Type an integer or a decimal. Do not​ round.) ​(b) Find the distance from the middle of the interval to either endpoint. The distance is 4.32. ​(Type an integer or a decimal. Do not​ round.)