4 The probability of being color blind is 005 for males and

4. The probability of being color blind is 0.05 for males and 0.0025 for females. In a class of 40 boys and 10 girls, what is the probability that a randomly chosen student from this group is color blind?

Solution

Probabilty of choosing boy=40/50

Probabilty of choosing girl=10/50

probabilty of being color blind for boy=0.05

probabilty of being color blind for girl=0.0025

prob of chosen student is color blind=(4/5)*0.05+(1/5)*0.0025=0.0405