Case Study on Jackson Manufacturing Company page 437 Please read the case study and answer the following questions. 1.) How big should the sample be for a statistically accurate standard (at, say, the 99.73% confidence level and accuracy of +/- 5%) ? 2.) Is the sample size adequate? 3.) How many units should be produced at this workstation per day? 4.) What is the cost per unit for this task in direct labor cost?