The Baldwin Piano Company has long argued that their method of teaching people to play the piano is superior to that of its competitors. To estimate any difference in length of time required to learn the basic techniques, as the new staff analyst for Baldwin, you select 100 students who used your method and find the mean time was 159 hours with s= 38.6 hours for your method. In a sample of 120 students using a competitor’s method, the mean was 184 hours with s= 58.6a) construct a 99% confidence interval for the difference in means.b) test the hypothesis, at the 5% level, that the Baldwin method reduces the time needed to learn the piano. 10) The Baldwin Piano Company has long argued that their method of teaching people toplay the piano is superior to that of its competitors. To estimate any difference in thelength of time required to learn the basic techniques, as the new staff analyst forBaldwin, you select 100 students who used your method and find the mean time was159 hours with s 38.6 hours for your method. In a sample of 120 students using acompetitor's method, the mean was 184 hours with s = 58.6.a) Construct a 99% confidence interval for the difference in means.b) Test the hypothesis, at the 5% level, that the Baldwin method reduces the timeneeded to learn the piano.

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Answered: 10) The Baldwin Piano Company has long…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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The Baldwin Piano Company has long argued that their method of teaching people to play the piano is superior to that of its competitors. To estimate any difference in length of time required to learn the basic techniques, as the new staff analyst for Baldwin, you select 100 students who used your method and find the mean time was 159 hours with s= 38.6 hours for your method. In a sample of 120 students using a competitor’s method, the mean was 184 hours with s= 58.6 a) construct a 99% confidence interval for the difference in means. b) test the hypothesis, at the 5% level, that the Baldwin method reduces the time needed to learn the piano.