Question #335002

Random samples with size 5 are drawn from the population containing the values 26, 32, 41, 50, 58, and 63.


Determine the number of possible samples with size 5.

1
Expert's answer
2022-05-02T16:20:13-0400

Consider two situations: samples without replacement (order of numbers does not matter) and samples with replacement(order of numbers matters). In case we consider samples without replacement (order of numbers does not matter), we get 66 different samples. We have to determine, which element to exclude (from 66 numbers) to receive samples of size 55. For samples with replacement(order of elements matters) we receive 656^5 elements. We used multiplication principle of combinatorics. Namely, we have 55 empty places and we have 66 choices for each place.

Answer: there are 66 different samples without replacement(order of numbers does not matter) and 656^5 samples with replacement(order of numbers matters).


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