Mathematics, 04.06.2021 03:30, Xapper14x

The puzzle editor of a game magazine asked 43 randomly selected subscribers how long it took them to complete a certain crossword puzzle. The 99% confidence interval for the median completion time for all subscribers is 15.2 to 18.6 minutes.
The editor originally sent requests for completion times to 150 subscribers, only 43 responded.
Explain one potential source of bias in the study that is not accounted for by the margin of error

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The puzzle editor of a game magazine asked 43 randomly selected subscribers how long it took them to...