IN A BOY THERE ARE BLACK PENS, RED PENS, AND GREEN PENS
THE
RATIO OF
BLACK PENS TO RENS THAT ARE NOT BLAKK IS 9:11
THE
RATIO OF GREEN
PENS TO NOT GREEN PENS IS 3:5
OF
RED PENS TO GREEN PENS
THE
FIND
RATIO
BLACK PENS TO

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

If x = -2, then x 2-7x+10 equals a. 0 b.20 c.28

If set d is not the empty set but is a subset of set e, then which of the following is true? d ∩ e = d d ∩ e = e d ∩ e = ∅