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A company manufactures car batteries of ...

A company manufactures car batteries of a particular type. The lives (in years) of 40 such batteries were recorded as follows :
`{:(2.6,3.0,3.7,3.2,2.2,4.1,3.5,4.5,3.5,2.3,3.2),(3.4,3.8,3.2,4.6,3.7,2.5,4.4,3.4,3.3,2.9,3.0),(4.3,2.8,3.5,3.2,3.9,3.2,3.2,3.1,3.7,3.4,4.6),(3.8,3.2,2.6,3.5,4.2,2.9,3.6,,,,):}`
Construct a grouped frequency distribution table for this data, using class intervals of size `0.5` starting form the intervals `2-2.5`

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