simple random sample of 48 men from a normally distributed population results in a standard deviation of 9.1 beats per minute the normal range of pulse rate of adults is typically given as 60 to 100 beats per minute if the range rule of thumb is applied to the normal range the result is a standard deviation of 10 beats per minute use the sample results with a 05 significant level to test the claim that pulse rates of men have a 6 standard deviation equal to 10 beats per

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