A certain group of test subjects had pulse rates with a mean of 74.7 beats per minute and a standard deviation of 12.3 beats per minute. Use the range rule of thumb to identify the limits separating values that are significantly low or significantly high. Is a pulse rate of 49.3 beats per minute significantly low or significantly high?

Significantly low values are ____ beats per minute or lower.

Significantly high values are ____beats per minute or higher.

is a pulse rate of 49.3 beats per minute significantly low or significantlyhigh?