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Unformatted text preview: SAN JOSE STATE UNIVERSITY College of Engineering MBA/MSE Program ROSE ORCHARD COHORT 4 ENGR 201 Engineering Analysis _____________________________________________________ Test #2 Solution Problem #1: (25 pts) An article in the Transactions of the Institution of Chemical Engineers (Vol. 34, 1956, pp. 280-293) reported data from an experiment investigating the effect of several process variables on the vapor phase oxidation of naphthalene. A sample of the percentage mole conversion of naphthalene to maleic anhydride follows: 4.2, 4.7, 4.7, 5.0, 3.8, 3.6, 3.0, 5.1, 3.1, 3.8, 4.8, 4.0, 5.2, 4.3, 2.8, 2.0, 2.8, 3.3, 4.8, 5.0. (a) Calculate the sample mean. (5 pts) (b) Calculate the sample variance and sample standard deviation. (10 pts) (c) Construct a box plot of the data. (10 pts) Solution: (a) Sample mean = 4 20 80 1 = = = n x n i i . (b) Sample variance = ( 29 8663 . 19 46 . 16 1 1 2 = =-- = n x n i i ....
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