# Class - boys and girls

In the class are 60% boys and 40% girls. Long hair has 10% boys and 80% girls.

a) What is the probability that a randomly chosen person has long hair?
b) The selected person has long hair. What is the probability that it is a girl?

p1 =  0.38
p2 =  0.8421

### Step-by-step explanation:

${p}_{1}=0.1\cdot 0.6+0.8\cdot 0.4=0.38$
${p}_{2}=0.8\cdot 0.4\mathrm{/}{p}_{1}=0.8421$ Did you find an error or inaccuracy? Feel free to write us. Thank you! Tips to related online calculators
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