Students in a statistics class were asked to measure their resting pulse rates. After that, the instructor unexpectedly screamed and ran from one side of the class to the other. Students again measured their pulse rates. The pulse rates (in beats per minute) were recorded before and after the scream for the male students in the class. Perform a sign test to see whether the pulse rate went up significantly, using a significance level of 0.05 and treating the sample as random.

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