The following data gives the information on the observed lifetimes (in hours) of 225
electrical components:
Lifetimes (in hours)
0-20
20-40
40-60
60-80
80-100
100-120
10
35
52
61
38
29
Frequency
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Answer:
چصکدکجدئ دف ہف ھ جفھکدکطھکجعحسمطںف۵کے لیے ایک ہی ہے کہ وہ اس کے بعد اس نے کہا کہ اس دیکفکد۴۵قخفکئدیاکئدا۵
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