STAT 401 Midterm: STAT401 PILACHOWSKI-T SPRING2015 0101 MID EXAM

• School: University of Maryland
• Department: Statistics and Probability
• Course: STAT 401
• Professor: All

Document Summary

March 12, 2015 stat 401 exam 1. [pilachowski: counting front and back as one page, number the pages in your answer booklet 1 through 8. Answer question 1 on answer page 1, question 2 on answer page 2, etc: you may use one 8. 5x11 page and a calculator, show enough work that we can follow your thinking. Construct a 95% confidence interval and give a verbal interpretation of its meaning. 2. a. (4 points) a sample of 14 joint specimens of a particular type gave a sample mean proportional limit stress of 8. 50. Set up the calculation for a 95% lower confidence bound for the true average proportional limit stress of all such joints. (that is, all the numbers must be in place, but do not compute to a numeric answer. ) 2. b. (4 points) a sample of 14 joint specimens of a particular type gave a sample mean proportional limit stress of 8. 50.