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Supposed Matt wants to test the claim that the mean pulse rate of adult males is equal to 69 bpm, since he expects it to

Supposed Matt wants to test the claim that the mean pulse rate of adult males is equal to 69 bpm, since he expects it to be lower. A random sample of 140 adult males is used and found to have a mean of 68.3 bpm and a standard deviation of 10.7 bpm. Find the value of the test statistic.

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