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The following table gives the life times of 400 neon lamps:
(i) Represent the given information with the help of a histogram.
(ii) How many lamps have a life time of more than 700 hours?

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Detailed Solution

(i) The histogram of the given data is as follows,

The following table gives the life times of 400 neon lamps: Life time (in hours) Number of lamps 300–400 14 400–500 56 500–600 60 600–700 86 700–800 74 800–900 62 900–1000 48 (

(ii) How many lamps have a life time of more than 700 hours:

Lamps have a life of more than 700 hours = 74 + 62 + 48

= 184 Lamps

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