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Rudiy27
3 years ago
6

A bus holds 20 seats 6 persons took the bus. In how many ways can these persons sit?

Mathematics
1 answer:
natima [27]3 years ago
7 0
Answer:
120
Explanation:
multiply 20 and 6
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The formula we use is

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To find the z-score:
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Using a z-table (http://www.z-table.com) we see that this value is closest to a z-score of 2.33.

Using the z-score, our standard deviation (9) and our margin of error (3), we have:
n=(\frac{2.33(9)}{3})^2=(6.99)^2=48.86\approx 49
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