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na study of pulse rates of men a simple random sample of 146 men results...

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na study of pulse rates of men a simple random sample of 146 men results in a standard deviation of 11 3 beats per minute The normal range of pulse rates of adults is typically given as 60 to 100 beats per minute If the range rule of thumb is applied to that normal range the result is a standard deviation of 10 beats per minute Use the sample results with a 0 05 significance level to test the claim that pulse rates of men have a standard deviation equal to 10 beats per minute see the accompanying StatCrunch display for this test What do the results indicate about the effectiveness of using the range rule of thumb with the normal range fro 60 to 100 beats per minute for estimating o in this case Assume that the simple random sample is selected from a normally distributed population Click the icon to view the StatCrunch display Let a denote population standard deviation of the pulse rates of men in beats per minute Identify the null and alternative hypotheses Hp 0 10 H 0 10 Type Integers or decimals Do not round Identify the test statistic Round to two decimal places as needed

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