The probability that a spark plug is defective is 35%. Suppose that a person buys 7 spark plugs. Find the probability that  a. Exactly 4 spark plugs are defective.________ SIMPLIFY. (Round to 3 decimal places.) b. At least 5 spark plugs are defective. DO NOT SIMPLIFY. (Circle your answer.) . c. At least 1 spark plug is defective.__________ SIMPLIFY. (Round to 3 decimal places.)

A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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The probability that a spark plug is defective is 35%. Suppose that a person buys
7 spark plugs. Find the probability that 
a. Exactly 4 spark plugs are defective.________ SIMPLIFY. (Round to 3 decimal places.)
b. At least 5 spark plugs are defective. DO NOT SIMPLIFY. (Circle your answer.)
.
c. At least 1 spark plug is defective.__________ SIMPLIFY. (Round to 3 decimal places.)
 
 
 
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