Question: Several years ago a new CEO was appointed to a group of firms. Upon being named CEO, she was interested in comparing the proportion of employees with disabilities with the industry proportion. The proportion of employees with disabilities within her group of firms was 12%. As an analyst in the HR department you were asked to research this concern and report back. You conducted a random sample of firms within the industry. Your sample size was 157 employees and your data indicated that 9% had disabilities. Perform the appropriate hypothesis test showing all of your work. Justify your conclusion in statistical terms and interpret your conclusion in such a way that the CEO (who is not trained in quantitative methods ) can understand. Use a significance level of 5%.