Using assumed true population percentages of 2%, 3%, 4%, 5%, 6%, and 7%, plot the power curve for the test in given Exercise.
Exercise
simple random sample of 300 items is selected from a large shipment, and testing reveals that 4% of the sampled items are defective. The supplier claims that no more than 2% of the items in the shipment are defective. Carry out an appropriate hypothesis test and comment on the credibility of the supplier's claim.