In a study of 160 mass shooting events, how many perpetrators committed suicide?

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Multiple Choice

In a study of 160 mass shooting events, how many perpetrators committed suicide?

Explanation:
The main idea is turning a rate into a concrete count. In this study, 64 of the mass shooting events involved the perpetrator committing suicide, which is 40% of the 160 events. So the count is 64 because 0.40 × 160 = 64. The other options correspond to 20%, 10%, or 50%, which don’t match the study’s reported rate of 40%. Hence 64 is the value that fits the data.

The main idea is turning a rate into a concrete count. In this study, 64 of the mass shooting events involved the perpetrator committing suicide, which is 40% of the 160 events. So the count is 64 because 0.40 × 160 = 64. The other options correspond to 20%, 10%, or 50%, which don’t match the study’s reported rate of 40%. Hence 64 is the value that fits the data.

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