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On a math test 5 out of 20 students got an A If three students are chosen at random what is the probability that all three got an A on the test?
Wiki User
∙ 14y ago
P( a student getting an A) = 5/20=1/4
There are 3 students. The probability that all three got an A is (1/4)(1/4)(1/4)=1/64.
Wiki User
∙ 14y ago
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What is the probability a girl is chosen if 15 students are girls and 10 students are boys?
The ratio of girls to total students is 15:25, or 3:5. Three out of five students are girls so there would be a 60% probability that a girl would be chosen; a 2 out of 5 chance, or 40% probability that a boy would be chosen.
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What is the probability that three f2 seeds chosen at random will include at least one yellow seed?
One would need more facts about the situation to be able to answer this question.
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The ratio of girls to total students is 15:25, or 3:5. Three out of five students are girls so there would be a 60% probability that a girl would be chosen; a 2 out of 5 chance, or 40% probability that a boy would be chosen.
What is the probability that three F2 seed chosen at random will include at least one yellow seed?
The probability that three F2 seeds chosen from Mendel's study group will have at least one yellow seed is 63/64. It would be very rare to get three green seeds.
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hypergeometric distribution f(k;N,n,m) = f(3;52,4,3)
What is the probability that three f2 seeds chosen at random will include at least one yellow seed?
One would need more facts about the situation to be able to answer this question.
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