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(d) Compute an 82% CI for u when n = 100 and x = 58.0. watts (e) How large must n be if the width of the 99% interval for u is to be 1.0? (Round your answer up to the nearest whole number.) n 3=

(d) Compute an 82% CI for u when n = 100 and x = 58.0. watts (e) How large must n be if the width of the 99% interval for u is to be 1.0? (Round your answer up to the nearest whole number.) n 3=

Advanced Engineering Mathematics
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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A CI is desired for the true average stray-load loss u (watts) for a certain type of induction motor when the line current is held at 10 amps for a speed of 1500 rpm. Assume that stray-load loss is normally distributed with o = 2.9. (Round your answers to two decimal places.) (a) Compute a 95% CI for u when n = 25 and x = 58.0. 56.86 59.14 watts (b) Compute a 95% CI for µ when n = 100 and x = 58.0. 57.43 58.57 ) watts (c) Compute a 99% CI for u when n = 100 and x = 58.0. 57.25 58.75 watts (d) Compute an 82% CI for H when n = 100 and x = 58.0. watts (e) How large must n be if the width of the 99% interval for u is to be 1.0? (Round your answer up to the nearest whole number.) n = You may need to use the appropriate table in the Appendix of Tables to answer this question.
Transcribed Image Text:A CI is desired for the true average stray-load loss u (watts) for a certain type of induction motor when the line current is held at 10 amps for a speed of 1500 rpm. Assume that stray-load loss is normally distributed with o = 2.9. (Round your answers to two decimal places.) (a) Compute a 95% CI for u when n = 25 and x = 58.0. 56.86 59.14 watts (b) Compute a 95% CI for µ when n = 100 and x = 58.0. 57.43 58.57 ) watts (c) Compute a 99% CI for u when n = 100 and x = 58.0. 57.25 58.75 watts (d) Compute an 82% CI for H when n = 100 and x = 58.0. watts (e) How large must n be if the width of the 99% interval for u is to be 1.0? (Round your answer up to the nearest whole number.) n = You may need to use the appropriate table in the Appendix of Tables to answer this question.
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