# Bulbs are packed in a cartoon each containing 40 bulbs. 700 cartoons were examined for defective bulbs and results are given in the table.No. of defective bulbs              Frequency0                                                4001                                                 1802                                                  483                                                  414                                                   185                                                    86                                                    3more than 6                                    2One cartoon is selected at random. What is the probability that it has:a)no defective bulbs.b)defective bulbs from 2 to 6.c)defectve bulbs less than 4.

 number of defective bulbs 0 1 2 3 4 5 6 more than 6 frequency 400 180 48 41 18 8 3 2

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a)-no. of box having no defective bulbs n(E)=400
total no. of boxes n(S)=700
P(E)=n(E)/n(S)=400/700=4/7
b)-no. of box having defective bulbs from 2 to6=118
P(E)=n(E)/n(S)=118/700=59/350
c)-no. of boxes having less than4 defective bulbs=669
P(E)=n(E)/n(S)=669/700
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