che361_hw9

# che361_hw9 - Homework#9 ChE 361 Spring 2010 Problem 1...

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Unformatted text preview: Homework #9 ChE 361 Spring 2010 Problem 1. Consider the following data set for the polydispersity of a polymer product: x = { 2 . 39 2 . 01 2 . 32 2 . 09 2 . 24 2 . 18 } Determine the confidence interval for the mean assuming a 95% confidence level: CONF . 95 { ¯ x- k ≤ μ ≤ ¯ x + k } . Problem 2. Consider a CSTR of constant volume V in which the following reactions take place: A → B,B → A,B → C,A → D . Steady-state experiments were performed at different feed concentrations to yield the following data set: Run C Af ¯ C A ¯ C B 1 2 0.60 0.70 2 3 1.00 0.90 3 4 1.35 1.05 4 5 1.60 1.25 Let x = C Af be the input and y = ¯ C B be the output. 1. Perform regression analysis to find the linear regression model y = k + k 1 x . Show all the necessary steps, including calculation of the sample means (¯ x, ¯ y ), the sample variances ( s 2 x ,s 2 y ) and covariance ( s xy ), and the regression parameters ( k , k 1 )....
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che361_hw9 - Homework#9 ChE 361 Spring 2010 Problem 1...

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