18.
in 19 and 20, use the expression 5.3t - (20 + 4) + 11.
20
19. which part of the expression is a quotient?
describe its parts.

An optical inspection system is used to distinguish among different part types. the probability of a correct classification of any part is 0.92. suppose that three parts are inspected and that the classifications are independent. let the random variable x denote the number of parts that are correctly classified. determine the probability mass function of x. round your answers to four decimal places (e.g. 98.7654). x f(x) 0 1 2 3