In a pulse rate research, a simple random sample of 81 men results
In a pulse rate research, a simple random sample of 81 men results
in a mean of 75 beats per minute, and a standard deviation of 12 beats per minute. Based on the sample results, ther esearcher concludes that the pulse rates of men have a standard deviation greater than 10 beats
per minutes. Use a 0.05 significance level to test the researcher’s claim.
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