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To decide on the number of service counters needed for stores to be built in the future, a supermarket chain wanted to obtain

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Answer #1

Solution:

a)

0 2 2 2 3 3 4 4 4 0 555 6 6 6 6 777 88 99 1 0 0 0 0 0 1 1 2 2 2 2 2 3 3 3 3 4 1 5 6 7777 88 89 9 2 1 2 3 4 28 3 1 1 317 4 Non

(b) What fraction of the service times are less than or equal to 1 minute?

Answer: \large \frac{27}{60}=\frac{9}{20}

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