calculate the chance of being admitted to your future university.

Level 2

A test Committee knows by experience that the probability of being admitted into a university, is 0,95 for students with high grades, 0,5 for those who got medium grades and 0,2 for the other students. The committee estimate that between the candidates, 35% have high grades and 50% have medium grades. If we consider a candidate randomly selected, had been admitted .what would be the probability that she hasn't gotten any of the high and medium grades.

0,0489 0,1444 0,0144 0,0498

Hanane Hamdi by Hanane Hamdi , 20, Morocco

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1 solution

R Mathe
May 26, 2018

Note: 0 , 2 ⋅ 0 , 15 0 , 2 ⋅ 0 , 15 + 0 , 5 ⋅ 0 , 5 + 0 , 95 ⋅ 0 , 35 = 0 , 04897959184 \frac{0,2\cdot 0,15}{0,2\cdot 0,15+0,5\cdot 0,5+0,95\cdot 0,35} = 0,04897959184 which rounds to 0,0490 \fbox{0,0490} not 0 , 0489 0,0489 .

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