Question

30. The following tables gives the life time of 400 neon lamps:
Time (hrs)
No. of Lamps
300-400
24
400-500
56
500-600
68
600-700
90
700-800
90
800-900
72
The probability that life time of the selected bulb is between 400 to 800 will be :
304
(ii)
(iii)
(iv) None
124
248
400
400
400


PLEASE ANSWER WITH STEPS URGENTLY​

Answer 1

Answer:

304/400

Step-by-step explanation:

Total number of bulbs are 400.

Total bulbs between 400-800 are 304.

P(E)=304/400