MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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Estimation
A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.
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Use the information below to answer the PULL STRENGTH questions that follow. Data from "Applied Statistics and Probability for Engineers", Fourth Edition, by Douglas C. Montgomery & George C. Runger. The Excel multiple regression output below is for predicting pull strength from wire length and die height. MULTIPLE REGRESSION EXCEL OUTPUT (PULL STRENGTH) SUMMARY OUTPUT Regression Statistics Multiple R 0.990523843 R Square 0.981137483 Adjusted R Square 0.979422709 Standard Error 2.288046833 Observations 25 ANOVA df S MS Significance F Regression 5990.771221 2995.385611 572.1671503 1.07546E-19 Residual 22 115.1734828 5.235158308 Total 24 6105.944704 Coefficients Standard Error t Stat P-value Lower 95% Upper 95% Intercept 2.263791434 1.060066238 2.135518851 0.04409945 0.065348623 4.462234246 Wire Length 2.744269643 0.093523844 29.34299438 3.90691E-19 2.550313062 2.938226225 Die Height 0.012527811 0.002798419 4.476746229 0.000188266 0.006724246 0.018331377
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Transcribed Image Text:Use the information below to answer the PULL STRENGTH questions that follow. Data from "Applied Statistics and Probability for Engineers", Fourth Edition, by Douglas C. Montgomery & George C. Runger. The Excel multiple regression output below is for predicting pull strength from wire length and die height. MULTIPLE REGRESSION EXCEL OUTPUT (PULL STRENGTH) SUMMARY OUTPUT Regression Statistics Multiple R 0.990523843 R Square 0.981137483 Adjusted R Square 0.979422709 Standard Error 2.288046833 Observations 25 ANOVA df S MS Significance F Regression 5990.771221 2995.385611 572.1671503 1.07546E-19 Residual 22 115.1734828 5.235158308 Total 24 6105.944704 Coefficients Standard Error t Stat P-value Lower 95% Upper 95% Intercept 2.263791434 1.060066238 2.135518851 0.04409945 0.065348623 4.462234246 Wire Length 2.744269643 0.093523844 29.34299438 3.90691E-19 2.550313062 2.938226225 Die Height 0.012527811 0.002798419 4.476746229 0.000188266 0.006724246 0.018331377
PULL STRENGTH Which of the following is a correct interpretation of the confidence interval for the die height coefficient? The average pull strength is expected to go up by one unit when die height is between 0.006 and 0.019 units and wire length is equal to one unit. The average pull strength is expected to go up by between 0.006 and 0.019 units when die height increases by one unit and wire length is kept constant. The average pull strength is expected to go up by one unit when die height increases by between 0.006 and 0.019 units and wire length is equal to zero units. The average pull strength is expected to go up by between 0.006 and 0.019 units when die height is zero units and wire length is equal to one unit. The average pull strength is expected to go up by one unit when die height increases by between 0.006 and 0.019 units and wire length is kept constant. O The average pull strength is expected to go up by between 0.006 and 0.019 units when die height increases by one unit and wire length is equal to zero units.
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Transcribed Image Text:PULL STRENGTH Which of the following is a correct interpretation of the confidence interval for the die height coefficient? The average pull strength is expected to go up by one unit when die height is between 0.006 and 0.019 units and wire length is equal to one unit. The average pull strength is expected to go up by between 0.006 and 0.019 units when die height increases by one unit and wire length is kept constant. The average pull strength is expected to go up by one unit when die height increases by between 0.006 and 0.019 units and wire length is equal to zero units. The average pull strength is expected to go up by between 0.006 and 0.019 units when die height is zero units and wire length is equal to one unit. The average pull strength is expected to go up by one unit when die height increases by between 0.006 and 0.019 units and wire length is kept constant. O The average pull strength is expected to go up by between 0.006 and 0.019 units when die height increases by one unit and wire length is equal to zero units.
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