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View History Bookmarks People window Help Take a Test Richard Manda Secure https://www.mathod com/student/playerTest aspxhestld-156959248&centerwin; yes 024 General Education Mathermatics Quiz: Quiz Chapter 11 Spring 2017 This Question: 1 pt 6 of A box contains 14 4 of which are defective, 4 are selected at random, find the probabiley that a. A defective. b None are defective. The probability is a Type a fraction. Simplify your answer) b The probability is (ype a faction, simplify your answer) Enter your answer in each of the answer boxes. Test 3 Chapter Spring 2017 This Quiz: 11 pts possible

Explanation / Answer

(a)The probability of a transistor being defective = 4/14

The probablity of the first transistor being defective = 4/14 * 3/13

The probablity of the all transistors being defective = 4/14 * 3/13 * 2/12 * 1/11 = 1/637 =0.0015

(b) By similar analogy, the probablity that no transistor is defective = 10/14 * 9/13 * 8/12 * 7/11 = 210/637 = 0.33

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