A calculator requires a keystroke assembly and a logic circuit. Assume that 98% of the keystroke assemblies and 93% of the logic circuits are satisfactory. Find the probability that a finished calculator will be satisfactory. Assume that defects in keystroke assemblies are independent of defects in logic circuits.
A) . 8649
B) . 9600
C) . 9114
D) . 9604

Question

Quizplus · Accepted Answer

The probability that a finished calculator will be satisfactory is the product of the probabilities that each of its components is satisfactory. Thus, for the keystroke assembly, it's 98% or 0.98, and for the logic circuit, it's 93% or 0.93. Multiplying these probabilities gives 0.98 * 0.93 = 0.9114.

A Calculator Requires a Keystroke Assembly and a Logic Circuit