2. A manufacturer wanted to improve on the processes used to produce electrical components. At the beginning of the year, the factory randomly examined 9,000 electrical components, and of these a...

How do I know which equation to use to start this question? It does not state if the population means are equal or unequal. Picture of the question

Extracted text: 2. A manufacturer wanted to improve on the processes used to produce electrical components. At the beginning of the year, the factory randomly examined 9,000 electrical components, and of these a total of 900 components were rejected after a quality-control inspection. A project was deployed to fix the problem. Following the project, 7,000 components were randomly picked to be examined. Of these, a total of 600 were rejected. Did the project intervention improve the process? *Independent sompl: ni=9000 E,=900 n2=7000 え。= 600 Test at the 2% significance level whether the population proportion of rejected components de- creased after the project compared to the population proportion prior to the project. Formulate and test the appropriate hypotheses. Use the P-value approach. Be sure to clearly state and explain your conclusion within the context of the question. sig.level a= 0.02 %3D assume: o= Ho: M-N2=0 HiiN,>N2