The probability that bulbs selected randomly from the lot has life less than 900 h, is

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. Find the probability that bulbs selected randomly from the lot has life less than 900 hours.

The probability that a randomly drawn positive factor of 60 is less than 7, is

80 bulbs are selected at random from a lot and their time (in hours) is recorded in the form of a frequency table given below One bulb is selected at random from the lot. The probability that its life is 1150 h, is

80 bulbs are selected at random from a lot and their time (in hours) is recorded in the form of a frequency table given below One bulb is selected at random from the lot. The probability that its life is 1150 h , is

80 bulbs are selected at random from a lot and their lifetime in hours is recorded as under One bulb is selected at random from the lot . What is the probability that the selected bulb has a life more than 500 hours ?

80 bulbs are selected at random from a lot and their lifetime in hours is recorded as under : One bulb is selected at random from the lot . What is the probability that its life is 1150 hours ?

The following table gives life time of 400 neon lamps: A bulb is selected at random. Find the probability of that the life time of the selected bulb is less than 500 hours.

The probability of selecting a rotten randomly from a heap of 900 apples is 0.18. What is the number of rotten apples in the heap ?

The probability of selecting a rotten apple randomly from a heap of 900 apples is 0.18 . What is the number of rotten apples in the heap?