February 23, 2017

Homework Help: Statistics

Posted by AmmanJordan on Monday, May 6, 2013 at 7:15am.

A true-false test consists of 20 questions, each of which has one correct answer: true, or false. One point is awarded for every correct answer, but one point is taken off for each wrong answer. Suppose a student answers every question by guessing at random, independently of other questions. Let S be the student¬Ęs score on the test.Find E(S), SE(S), P(S=0)

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