1. Twenty-five engine mounts are sampled each day and found to have an average width of 3 inches, with a standard deviation of 0.2 inches. What are the control limits that include 95.45% of the sample means?
2. Several samples of size n=8 have been taken from today’s production of fence posts. The average post was 4 yards in length and the average sample range was 0.021 yard. Find the 99.73% upper and lower control limits.
3. “The best marketing strategies aren’t top down, they’re outside in, starting with the customers’ needs and wants.” Critically analyze this statement using Amazon as your case study organisation.