The mean of the data for the resting heart rate of adults is 69 beats per minute, and the standard deviation is 2 beats per minute. The results of the data were normally distributed.

Question

About what percent of the population has a resting heart rate between 67 and 69?

Answer 1

Ah, I think I see what you're asking! You're asking about the percentage of the population that has a resting heart rate within one standard deviation of the mean. Since we know the standard deviation is 2 beats per minute, we can say that 68% of the population has a resting heart rate between 67 and 69 beats per minute. How does that answer sound?

Answer 2

Between 67 and 69 is one standard deviation from the mean, so by the Empirical Rule, that represents 34.13% of the data from the normal distribution. Therefore, 34.13% of the population has a resting heart rate between 67 and 69.

Hope this helped!