For a data set of the pulse rates for a sample of adult? females, the lowest pulse rate is 39 beats per? minute, the mean of the listed pulse rates is x overbarxequals=74.0 beats per? minute, and their standard deviation is sequals=11.4 beats per minute.

a. What is the difference between the pulse rate of 39 beats per minute and the mean pulse rate of the? females?

b. How many standard deviations is that? [the difference found in part? (a)]?

c. Convert the pulse rate of 39 beats per minutes to a z score. d. If we consider data speeds that convert to z scores between minus?2 and 2 to be neither significantly low nor significantly? high, is the pulse rate of 39 beats per minute? significant?