A manufacturer evaluates incoming power supplies from its vendor using the single sampling plan N = 5000, n = 25, and c = 0. In Excel, or similar spreadsheet, construct and plot the OC curve using 11 points from 0% to 10% by 1% increments. The x-axis will be fraction defective (p or np0 depending on whether you use the Binomial or Poisson function). The y-axis will be Pa (probability of acceptance). On the same graph, construct and plot a second OC curve (N = 5000, n = 25, and c = 2) using the same x-axis values. Show your work.

a. What is the probability, under the c= 0 plan, of accepting a batch of power supplies that is 4% nonconforming?

b. What is the probability, under the c= 2 plan, of rejecting a batch of power supplies that is 4% nonconforming?

*Note: Excel portion is all done. I'm note sure on A. and B. parts though. Thank you