Solution Found!
Integrated circuits consist of electric channels that are
Chapter 6, Problem 1E(choose chapter or problem)
Integrated circuits consist of electric channels that are etched onto silicon wafers. A certain proportion of cir- cuits are defective because of “undercutting,” which occurs when too much material is etched away so that the channels, which consist of the unetched portions of the wafers, are too narrow. A redesigned process, involving lower pressure in the etching chamber, is being investigated. The goal is to reduce the rate of undercutting to less than 5%. Out of the first 1000 circuits manufactured by the new process, only 35 show evidence of undercutting. Can you conclude that the goal has been met?
Questions & Answers
QUESTION:
Integrated circuits consist of electric channels that are etched onto silicon wafers. A certain proportion of cir- cuits are defective because of “undercutting,” which occurs when too much material is etched away so that the channels, which consist of the unetched portions of the wafers, are too narrow. A redesigned process, involving lower pressure in the etching chamber, is being investigated. The goal is to reduce the rate of undercutting to less than 5%. Out of the first 1000 circuits manufactured by the new process, only 35 show evidence of undercutting. Can you conclude that the goal has been met?
ANSWER:Step 1 of 5
Given:
The number of circuits manufactured by the new process is 1000.
The number that showed evidence of undercutting is 35.