EXAM 2-A - STAT 400 Fall 2011 Version A Name BD1 Th 2:30...

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STAT 400 Fall 2011 Name ANSWERS . Version A BD1 BD2 BD3 BD4 Th 2:30 We 4:00 We 4:00 Th 2:30 317 DKH 165 Noyes 143 Altgeld 328 Armory Srijan Sengupta Srijan Sengupta Robert Eisinger Robert Eisinger Exam 2 Please circle your discussion section. Be sure to show all your work; your partial credit might depend on it. If the answer is a function, its support must be included. Any information given in the beginning of a problem applies to the entire problem; any information given in a part of a problem applies to that part only. No credit will be given without supporting work. The exam is closed book and closed notes. You are allowed to use a calculator and one 8½" x 11" sheet with notes. ________________________________________________________________________ Academic Integrity The University statement on your obligation to maintain academic integrity is: If you engage in an act of academic dishonesty, you become liable to severe disciplinary action. Such acts include cheating; falsification or invention of information or citation in an academic endeavor; helping or attempting to help others commit academic infractions; plagiarism; offering bribes, favors, or threats; academic interference; computer related infractions; and failure to comply with research regulations. Rule 33 of the Code of Policies and Regulations Applying to All Students gives complete details of rules governing academic integrity for all students. You are responsible for knowing and abiding by these rules. Page 1 2 3 4 5 6 7 Total Earned / 70
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Page 1 of 7 1. In a random sample of 17 ¾-pound” burgers at Burger Queen , the average weight of beef was 11.91 ounces with the sample standard deviation 0.175 ounces. (Assume the weights are normally distributed.) a) (4) Construct a 90% confidence interval for the overall average weight of beef in a ¾-pound” burger at Burger Queen . X = 11.91. s = 0.175. n = 17. α = 0.10. σ
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This note was uploaded on 02/15/2012 for the course STAT 400 taught by Professor Kim during the Spring '08 term at University of Illinois, Urbana Champaign.

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EXAM 2-A - STAT 400 Fall 2011 Version A Name BD1 Th 2:30...

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