new process for producing small precision parts is being studied. The process consists of mixing fine metal powder with a plastic binder, injecting the mixture into a mold, and then removing the binder with a solvent. These data are obtained on parts that should have a 1-inch diameter and whose standard deviation should not exceed.0025inch: For these dataxˉ =1.00084ands=.00282. (a) TestH 0 :μ=1H 1 :μ=1​at theα=.05level. (b) TestH 0 :σ=.0025H 1 :σ>.0025 at the α=.05 level.