Graph the OC curve for the double sampling plan with n1  20, n2  10, c1  3, and c2  c3  5, as described in this section. If you are doing this by hand, evaluate the curve at p  0, .2, .4, .6, .8, and 1 only. (Hint: The OC curve for this sampling plan has the form OC(p)  PX  3  p, n  20

 PX  4  p, n  20 PY  1  p, n  10

 PX  5  p, n  20 PY  0  p, n  10.)