Books are packed in piles each containing 20 books..thirty five piles were examined for defective books and the result are given the following table
Number of defective books 0 , 1 , 2 , 3 ,4 ,5 ,6 ,above 6
Frequency 400 , 180 ,48 ,41 ,18 ,8 , 3 , 2
one pile was selected at random ,what is the probability that it has .
1. No defective book
2.More than 0 but less than 4 defective books
3. More than 4 defective books
Answers
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Step-by-step explanation:
1. 400÷700 = 4/7
2. 269÷700 = 269/700
3. 13÷700 = 13/700
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