80 bulbs are selected at random from a lot and their life time ( in hours) is recorded in the form of a frequency table given below: Lifetime (in hours)3005007009001100Frequency1012232510 One bulb is selected at random from the lot. The probability that its life is 1150 h, is: A) 180 B) 716 C) 0 D) 1

80 bulbs are selected at random from a lot and their life time ( in ho

1.	80 bulbs are selected at random from a lot and their life time ( in hours) is recorded in the form of a frequency table given below: Lifetime (in hours)3005007009001100Frequency1012232510 One bulb is selected at random from the lot. The probability that its life is 1150 h, is: A) 180 B) 716 C) 0 D) 1
Answer» 80 bulbs are selected at random from a lot and their life time ( in hours) is recorded in the form of a frequency table given below: $\begin{matrix} L i f e t i m e (i n h o u r s) & 300 & 500 & 700 & 900 & 1100 F r e q u e n c y & 10 & 12 & 23 & 25 & 10 \end{matrix}$ One bulb is selected at random from the lot. The probability that its life is 1150 h, is: A) $\frac{1}{80}$ B) $\frac{7}{16}$ C) 0 D) 1