Question

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:

(a) 1/80

(b) 7/16

(c) 0

(d) 1​

Answer 1

the answer will be (a)

hope it helps

Answer 2

Answer:

c) 0

because it is an impossible event