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There are 500 packets in a large box and each packet contains 4 electric devices in it. On testing, at the time of packing, it was noted that there are some faulty pieces in the packets. The data is as given below : No of faulty devices in a packet01234Total number of packetsNumber of packets300100503020500 (i) If a buyer will only tolerate the maximum of one faulty piece in a packet, what is the probability that a packet will be rejected by him? (ii) Another buyer will only take packets with all the pieces functional. What is the probability that a packet will be rejected? [4 MARKS] |
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Answer» There are 500 packets in a large box and each packet contains 4 electric devices in it. On testing, at the time of packing, it was noted that there are some faulty pieces in the packets. The data is as given below : No of faulty devices in a packet01234Total number of packetsNumber of packets300100503020500 (i) If a buyer will only tolerate the maximum of one faulty piece in a packet, what is the probability that a packet will be rejected by him? |
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