The amount of weight required to break a certain brand of twine has a normal density function, with μ = 43 kilograms and σ = 1.5 kilograms. Find the probability that the breaking weight of a piece of the twine is less than 40 kilograms.

Assume that the variable under consideration has a density curve. The area under the density curve that lies to the right of 20 is 0.368.   a. What percentage of all possible observations of the variable exceed 20​?   b. What percentage of all possible observations of the variable are at most 20​?   a. ___________% ​(Type an integer or a​ decimal.)   b. ___________% ​(Type an integer or a​ decimal.)