Session 5: yield, cpcpk, process control 1. process yield and ppm

1a. for 2 process steps, each with 5% fraction defective, what is our final process yield? hint: process yield for a process with n steps and fraction defective, p, at each step = (1-p)^n

1b. for 4 process steps, each with a yield of 25%, what is our final process yield? hint: here 1-p = 0.25

1c. for a 95% process yield, what is the ppm (parts per million) defective? hint: p = 1 – 0.95

1d. for 99.999% process yield, what is the ppm (parts per million) defective?

The federal reserve controls certain interest rates in the united states. investors often try to speculate as to whether the federal reserve will raise or lower rates and by how much. suppose a company conducts extensive interviews with financial analysts, and as a result, predicts that "thefed" will increase rates by an average of 0.25 percentage points every six months for the forseeable future. which type of equation could be used to model the predicted interest rates over the next several years, assuming no other significant changes? a) a linear equation b) a quadratic equation c) a polynomial equation d) an exponential equation