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Past Exam for STAT 4705 - Statistics for Engr with Glynn at Virginia Tech (VT)

Exam Information

Material Type:Exam 1
Professor:Glynn
Class:STAT 4705 - Statistics for Engr
Subject:Statistics
University:Virginia Polytechnic Institute And State University
Term:Spring 2001
Keywords:
  • Transmission
  • The Independent
  • Independent
  • Conditional
  • No Correlation
  • Communications
  • Probability.
  • Engineering
  • Random Variables
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Sample Document Text

STAT 4705 Test I February 16, 2001 Name, ___________ _ 1. Eight applicants for three job. openings are ranked according to ability, with number 1 being the best, number 2 the second best, and so on. Suppose that these rankings are unknown to the personnel manager of the employer, who simply hires three applicants at random. a) Find that probability that the best applicant is 1I0t selected in the three applicants that are hired. b) Given that the best applicant is not selected, find the conditional probability that the second best applicant is selected. 2. Items produced by a manufacturing process can be classified as grade A, grade B, or grade C. Items are independent and the probabHities for grades A. B, and C are, respectively, 0.7, 0.2, and 0.1. Suppose that two items are selected for inspection. Let X be the number of grade A items in the two items, and let yoo the number of grade B items in the two items. The joint probability functionj{x, y) is given in the following table: x=o...

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