A survey was given to a random sample of 240 residents of a town to determine whether they support a new plan to raise taxes in order to increase education spending. Of those surveyed, 55% of the people said they were in favor of the plan. Determine a 90% confidence interval for the proportion of people who favor the tax plan. You must have all of the following components in order to receive full credit: 1. Identify the parameter of interest. 2. Check if the conditions for constructing a confidence interval for p are met. 3. Calculate the confidence interval and show your work. Write the confidence interval using interval notation. Round all answers to 3 decimal places. Note: If you are using a graphing calculator, name the procedure as one-proportion z interval as part of your work. Then write the confidence interval using interval notation. 4. Interpret the interval in context.
