A CI is desired for the true average stray-load loss μ (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 a = 2.9. (Round your answers to two decimal places.) (a) Compute a 95% CI for μ when n = 25 and x = 51.2. watts (b) Compute a 95% CI for when n = 100 and X = 51.2. watts (c) Compute a 99% CI for u when n = 100 and x 51.2. watts (d) Compute an 82% CI for u when n = 100 and x = 51.2. watts
A CI is desired for the true average stray-load loss μ (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 a = 2.9. (Round your answers to two decimal places.) (a) Compute a 95% CI for μ when n = 25 and x = 51.2. watts (b) Compute a 95% CI for when n = 100 and X = 51.2. watts (c) Compute a 99% CI for u when n = 100 and x 51.2. watts (d) Compute an 82% CI for u when n = 100 and x = 51.2. watts
Mathematics For Machine Technology
8th Edition
ISBN:9781337798310
Author:Peterson, John.
Publisher:Peterson, John.
Chapter47: Applications Of Formulas To Cutting Speed, Revolutions Per Minute, And Cutting Time
Section: Chapter Questions
Problem 41A: Compute the following problems. Express the answers to 1 decimal place. Use: T=LFN A slot 812.00...
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Transcribed Image Text:A CI is desired for the true average stray-load loss μ (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 = 51.2.
watts
(b) Compute a 95% CI for u when n = 100 and x = 51.2.
watts
(c) Compute a 99% CI for μ when n = 100 and x = 51.2.
watts
(d) Compute an 82% CI for u when n = 100 and x = 51.2.
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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