Question: Exercise 3: Eighty selected light bulbs were tested to determine their life time ( in hours ). This frequency distribution was obtained Class Frequency boundaries

Exercise 3: Eighty selected light bulbs were tested to determine their life time ( in hours ). This frequency distribution was obtained Class Frequency boundaries 52.5-63.5 63.5-74.5 12 74.5-85.5 25 85.5-96.5 18 96.5-107.5 14 107.5-118.5 5 Find the lifetimes corresponding to the following 1- 25th percentile 2- Forth decile 3- 75th percentile 4- 95th percentile

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