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After a workout, all the students in gym class took their heart rates. The average rate was 129 beats per minute, and the standard deviation of the students’ rate was 11.8 . What is the range of values that you would expect most of the heart rates to fall between?



Answer :

Answer:

117.2 and 140.8 beats per minute.

Step-by-step explanation:

We can expect that most of the students' heart rates will fall within one standard deviation of the average rate. In this case, the average rate is 129 beats per minute, and the standard deviation is 11.8 beats per minute. So, one standard deviation below the mean is 129−11.8=117.2 beats per minute, and one standard deviation above the mean is 129+11.8=140.8beats per minute. Therefore, we expect that most of the heart rates will fall between 117.2 and 140.8 beats per minute.

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