in agroup of 900 students 200 attend extra classes 300 attend school regularly and 400 study themselves with the help of the peers in 0.3 0.4 and 0.2 respectively . one student is selected in the competition what is the probability he attends school regularly.
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6/13 is probability one student selected in the competition attends school regularly
Step-by-step explanation:
Total Possible Selection in Competition = 200(0.3) + 300(0.4) + 400(0.2)
= 60 + 120 + 80
= 260
probability of Selection in competition if he attends school regularly.
= 300 * 0.4
= 120
Probability one student selected in the competition attends school regularly = 120/260
= 12/26
= 6/13
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