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The following table gives the life time of 400 neon lamps: Life time (in hours) 300-400 400-500 500-600 600-700 700-800 800-900 900-1000 Number of lamps: 14 56 60 86 74 62 48 A bulb is selected of random, Find the probability that the the life time of the selected bulb is:(i) less than 400(ii) between 300 to 800 hours(iii) at least 700 hours. |
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Answer» The following table gives the life time of 400 neon lamps:
A bulb is selected of random, Find the probability that the the life time of the selected bulb is: (i) less than 400 (ii) between 300 to 800 hours (iii) at least 700 hours. |
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