1. Using the Customer Survey data, what proportion of customers rate the company as 4 or 5 on quality, ease of use, price, and service? How do these proportions differ by geographic region? (15 points) 2. Using the Q4 2018 Response Time data, what estimates, with reasonable assurance, can PLE give customers for response times to customer service calls? (15 points) 3. Using the Transmission Costs data, can you determine whether one of the proposed processes is better than the current process? (20 points) 4. Using the Mower Test data, what would be a confidence interval for the proportion of failures of mover test performance? (20 points) 5. Using the Blade Weight data, what is the sampling distribution of the mean, the overall mean, and the standard error of the mean? Is a normal distribution an appropriate assumption for the sampling distribution of the mean? How many blade weights must be measured to find a 95% confidence interval for the mean blade weight with a sampling error of at most 0.05? What if the sampling error is specified as 0.02? (30 points)