The probability is 0.0008.
I used a binomial probability on this one, since there are two outcomes (either pass or fail); the events are independent (the probability of one person passing does not influence the probability of another passing); and there are a fixed number of trials (in this case, 20).
For binomial probabilities, we use the formula:

With our information, we have:
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Present the numbers in decimal
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0.25 = 0.25
3/8 = 0.375
5/16 = 0.3125
<span><em>(It is easier to arrange the number using decimals)</em>
</span>
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Arrange the numbers
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0.25 (0.25) , 0.3125 (5/16) , 0.0375 (3/8)
<em>(Put the original numbers given in your final answer)</em>
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Answer: 0.25 , 5/16 , 3/8
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Answer:
Concept: Application of Real world problems
- They counted 470470470 milliliters
- You donate on average 470 ml per person
- So 470470470÷ 470= 1,001,001 people.