11-1 (modified) suppose that copper prices have dropped so that the break-even level for the mean yield from bacterial leaching rises from 36 lb/ton to 37 lb/ton. after reformulating the engineer's hypotheses from p. 345 (also recall that sigma = 25 and n=100), (a) using the critical value of 40, determine the type i error probability: pr(type i error) =

(b) using the critical value of 40 and assuming mu = 43, findthe type ii error probability:

pr(type ii error) =