Question

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

One bulb is select from lot

a. Probability of that its life is 1150 hours.

b. Probability of that life is more that 500 hours.

c. Probability of that life is atleast 500 hours​

Answer 1

Answer:

b) Probability of that life is more that 500 hours.

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