Pulse rates (in bpm) were collected from a random sample of males who are non-smokers but do drink alcohol. The pulse rates before they exercised had a mean of 74.93 and a standard deviation of 19.65. The pulse rates after they ran in place for one minute had a mean of 123.99 and a standard deviation of 26.57.

Which of the following statements best compares the means?

Select an answer The pulse rates before they exercised had a higher average than the pulse rates after they ran in place for one minute. The pulse rates before they exercised had a lower average than the pulse rates after they ran in place for one minute. The middle of the pulse rates before they exercised was higher than the middle of the pulse rates after they ran in place for one minute. The middle of the pulse rates before they exercised was lower than the middle of the pulse rates after they ran in place for one minute. The pulse rates before they exercised were more consistent than the pulse rates after they ran in place for one minute. The pulse rates before they exercised were less consistent than the pulse rates after they ran in place for one minute.

Which of the following statements best compares the standard deviations?

Select an answer The pulse rates before they exercised had a higher average than the pulse rates after they ran in place for one minute. The pulse rates before they exercised had a lower average than the pulse rates after they ran in place for one minute. The middle of the pulse rates before they exercised was higher than the middle of the pulse rates after they ran in place for one minute. The middle of the pulse rates before they exercised was lower than the middle of the pulse rates after they ran in place for one minute. The pulse rates before they exercised were more consistent than the pulse rates after they ran in place for one minute. The pulse rates before they exercised were less consistent than the pulse rates after they ran in place for one minute.