A student wants to determine the proportion of times a spun penny will land on heads. She spins a penny 50 times and records the number of times it lands on heads. What type of sampling is described in this study?

The student spins the same penny under the same study conditions 50 times and records one outcome: whether each spin lands on heads. These trials make up one sample, not two separate samples or paired data. The correct choice is one sample.

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