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categoryإحصاء schoolبكالوريوس event_available2026-07-15

السؤال

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Q2 (7 pt.): The following data show the accompanying data on x = current density (mA/cm²) and y = rate of deposition (um/min) Do you agree with the claim by the article's author that "a linear relationship was obtained from the tin-lead rate of deposition as a function of current density"? Explain your reasoning. x 20 40 60 80 y 0.24 1.20 1.71 2.22 a b. (0.5 pt.) Graph y versus x (you can use Excel and bring the output of Excel for this part) (2 pt.) Determine the coefficient parameters (Bo-P₁) c. (1 pt.) Do you agree with the claim by the article's author that "a linear relationship was obtained from the tin-lead rate of deposition as a function of current density? Explain your reasoning. (a = 5% or confidence level =95%) d (1.5 pt.) Determine (1-a)% confidence interval for the slope of regression line e. (1 pt.) Calculate R-Square f (1 pt.) Bring the output of Excel for this regression modeling and highlight the R-Square and regression parameters.

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