Question

body and exam measurements were collected from 300 subjects. the pulse rates from 100 males have a mean of 68.7 beats per minute and a standard deviation of 10.8 beats per minute. use the range - rule of thumb for identifying significant values to identify the limits separating values that are significantly low or significantly high. is a pulse rate of 70.0 beats per minute significantly low, significantly high, or neither? (all of these pulse rates are measured at rest.) explain. significantly low values are 47.1 beats per minute or lower (type an integer or a decimal. do not round.) significantly high values are 90.3 beats per minute or higher (type an integer or a decimal. do not round.) a pulse rate of 70.0 beats per minute is dropdown because it is dropdown the mean.

Explanation:

Step1: Identify the given values

Mean $\mu = 68.7$, standard - deviation $\sigma=10.8$.

Step2: Recall the range - rule - of - thumb for significant values

Significantly low values are $\mu - 2\sigma$ and significantly high values are $\mu + 2\sigma$.

Step3: Calculate the significantly low value

$\mu-2\sigma=68.7 - 2\times10.8=68.7 - 21.6 = 47.1$.

Step4: Calculate the significantly high value

$\mu + 2\sigma=68.7+2\times10.8=68.7 + 21.6 = 90.3$.

Step5: Determine the significance of 70.0

Since $47.1<70.0<90.3$, a pulse rate of 70.0 beats per minute is not significant.

Answer:

A pulse rate of 70.0 beats per minute is not significant because it is within 2 standard - deviations of the mean.