Chapter 9.1, Problem 18E

Formulating Hypotheses. In Exercises 15–22, state the null and alternative hypotheses for a hypothesis test; indicate whether the hypothesis test will be left-tailed, right-tailed, or two-tailed; and clearly state the two possible conclusions that address the given claim.

18. Quality Control. The quality control manager at a manufacturing company claims that the proportion of defective transistors is 0.03.