Q1Multiple choiceExercise 14.1
1 4 3
- (A)
- (B)
- (C)
- (D)5 4 5 4 29. 80 bulbs are selected at random from a lot and their life time (in hrs) is recorded in the form of a frequency table given below : Life time (in hours) 300 500 700 900 1100 Frequency 10 12 23 25 10 One bulb is selected at random from the lot. The probability that its life is 1150 hours, is
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(B)