The following table gives the lifetimes of 400 neon lamps:

Question:

The following table gives the lifetimes of 400 neon lamps:

(i) Represent the given information with the help of a histogram.
(ii) How many lamps have a lifetime of more than 700 hours?

 

Solution:

(i)

(ii) Lamps with lifetime more than 700 hours = 74 + 62 + 48 = 184 

 

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