Question

-/10 POINTS DEVORESTAT9 7.E.015. MY NOTES ASK YOUR TEACHER Determine the confidence level for each of the following large-sample one-sided confidence bounds. (Round your answers to the nearest whole number.) (a) Upper bound: x + 1.04s/n % (b) Lower bound: - 2.33s/n (c) Upper bound: x + 0.52s/ You may need to use the appropriate table in the Appendix of Tables to answer this question. Need Help? Read It Watch It Talk to a Tutor -/10 POINTS DEVORESTAT9 7.E.503.XP. MY NOTES ASK YOUR TEACHER An article gave the following summary data on shear strength (kip) for a sample of 3/8-in. anchor bolts: n = 72, X = 5.00, s = 1.50. Calculate a lower confidence bound using a confidence level of 90% for true average shear strength. (Round your answer to two decimal places.) | kip You may need to use the appropriate table in the Appendix of Tables to answer this question. Need Help? Read It Talk to a Tutor -/10 POINTS DEVORESTAT9 7.E.019. MY NOTES ASK YOUR TEACHER An article reported that, in a study of a particular wafer inspection process, 356 dies were examined by an inspection probe and 179 of these passed the probe. Assuming a stable process, calculate a 95% (two-sided) confidence interval for the proportion of all dies that pass the probe. (Round your answers to three decimal places.)

Answer 1

solution: AC Dower area a) z-critical = 1.04 ubber bound c=185 % b) z-critical = - 2.33 lower bound C 99 ) c) Z-critical = 0.52 ² upher bound ca 1701 6) go to lower contidence internal = t - La Som = 5 - 1.645 1.50 V72 [4.71 4.71 2012 7) 95% confidence interval = ] + 30112 VB (1-) 11.96 GO 12) = 0.451 10:555) 356