0.5/1 POINTS PREVIOUS ANSWERS DEVORESTAT9 9.E.046. MY NOTES ASK YOUR TEACHER As part of a larger project to study the behavior of stressed-skin panels, a structural component being used extensively in North America, an article reported on various mechanical properties of Scotch pine lumber specimens. Data on the modulus of elasticity (MPa) obtained 1 minute after loading in a certain configuration and 4 weeks after loading for the same lumber specimens is presented here. Observation 1 min 4 weeks Difference 10,410 9,170 1240 16,620 13,250 3370 17,500 14,720 2780 15,480 720 2760 12,930 10,120 2810 17,260 14,570 2690 13,400 11,220 2180 13,900 11,100 2800 13,630 11,420 2210 13,280 10,950 2330 14,370 12,110 2260 11,700 8,620 3080 15,470 12,590 2880 17,840 15,090 2750 14,040 10,550 3490 14,760 12,230 2530 14 15 16 Calculate an upper confidence bound for the true average difference between 1-minute modulus and 4 week modulus; first check the plausibility of any necessary assumptions. (Use a 0.05. Round your answer to two decimal places.) MPa Tot confidenhound