Question

4) (0.5 mark) A male student of the author has a measured pulse rate of 52 beats per minute. According to a National Center for Health Statistics data set, males have a mean pulse rate of 67.3 beats per minute and a standard deviation of 10.3 beats per minute. 1 Determine whether the student's pulse rate is significantly low or high by calculating the z score. Consider usual pulse rates to be within 2 standard deviations of the mean. Justify your answer.

Answer 1

Mean of the pulse rate u= 67.3 beats per minute Standard deviation 10-3 beats per minute ::2 score corresponding to pulse Date of 52 beats pero meniute 52-67.3 10.3 -1.485 The 2 score indicates that the pulse sate 52 beats per mencile is 1• 485 Standard deviations of away thereo form the mean and negative sign indicates that it is below the mean M. studente pulse rate is not significantly low; though it is lower than the mean pulse date; as it is within two standard deviations and within two standard deviations of the mean anything Cost the mean is considered usual.