A firm which bottles shampoo selects some filled bottles for examination...

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A firm which bottles shampoo selects some filled bottles for examination: The procedure used is that two random numbers are chosen, x and y. Starting at the x bottle filled, every bottle at an interval of y is then chosen for examination. This type of sampling is known as:

A. Multi-stage

B. Random

C. Systematic

D. Stratified

Answer: Option C

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