- The following table gives the experience (in years) and monthly salaries (in hundreds of RM) of nine randomly selected secretaries. [Jadual berikut memberikan pengalaman (dalam tahun) dan gaji bulanan (dalam ratusan RM) sembilan setiausaha yang dipilih secara rawak] Experience [Pengalaman) Monthly Salary [Gaji Bulanan] 14 42 24 33 6. 31 4 29 9 39 18 47 5 16 30 43 Ex = 80 Σν= 318 Σ-968 Ey? = 11,710 Exy = 3,162 a) Calculate the estimated linear correlation coefficient, r, and interpret your result. [Kirakan penganggar pekali korelasi liner, r, dan tafsirkan keputusan anda.) b) Write the equation for least squares regression line with experience as independent variable and monthly salary as a dependent variable. [Tuliskan persamaan bagi garis regresi kuasa dua terkecil dengan pengalaman sebagai pembolehubah tidak bersandar dan gaji bulanan sebagai pembolehubah bersandar.) c) Obtain the coefficient of determination and interpret your answer. [Dapatkan pekali penentuan dan tafsirkan jawapan anda.] d) Test if the true correlation coefficient p>0 at a = 0.10. [Uji samada pekali korelasi sebenar p>0 pada a =0.10.] e) Predict the monthly salary if the experience is 12 years. [Ramalkan gaji bulanan jika pengalaman adalah 12 tahun.]

- The following table gives the experience (in years) and monthly salaries (in hundreds of RM) of nine randomly selected secretaries. [Jadual berikut memberikan pengalaman (dalam tahun) dan gaji bulanan (dalam ratusan RM) sembilan setiausaha yang dipilih secara rawak] Experience [Pengalaman) Monthly Salary [Gaji Bulanan] 14 42 24 33 6. 31 4 29 9 39 18 47 5 16 30 43 Ex = 80 Σν= 318 Σ-968 Ey? = 11,710 Exy = 3,162 a) Calculate the estimated linear correlation coefficient, r, and interpret your result. [Kirakan penganggar pekali korelasi liner, r, dan tafsirkan keputusan anda.) b) Write the equation for least squares regression line with experience as independent variable and monthly salary as a dependent variable. [Tuliskan persamaan bagi garis regresi kuasa dua terkecil dengan pengalaman sebagai pembolehubah tidak bersandar dan gaji bulanan sebagai pembolehubah bersandar.) c) Obtain the coefficient of determination and interpret your answer. [Dapatkan pekali penentuan dan tafsirkan jawapan anda.] d) Test if the true correlation coefficient p>0 at a = 0.10. [Uji samada pekali korelasi sebenar p>0 pada a =0.10.] e) Predict the monthly salary if the experience is 12 years. [Ramalkan gaji bulanan jika pengalaman adalah 12 tahun.]

Algebra & Trigonometry with Analytic Geometry

13th Edition

ISBN:9781133382119

Author:Swokowski

Publisher:Swokowski

Chapter10: Sequences, Series, And Probability

Section10.8: Probability

Problem 32E

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