Question

For a data set of the pulse rates for a sample of adult​ females, the lowest pulse rate is 3737 beats per​ minute, the mean of the listed pulse rates is x=74.0 beats per​ minute, and their standard deviation is s=12.7 beats per minute.

a. What is the difference between the pulse rate of 37 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 37 beats per minutes to a z score.

d. If we consider pulse rates that convert to z scores between −2 and 2 to be neither significantly low nor significantly​ high, is the pulse rate of 37 beats per minute​ significant?

a. The difference is ____beats per minute.

​(Type an integer or a decimal. Do not​ round.)

b. The difference is ______standard deviations.

​(Round to two decimal places as​ needed.)

c. The z score is z=______.

​(Round to two decimal places as​ needed.)

d. The lowest pulse rate is _______

Answer 1

a)

The difference is 74-37 =37 beats per minute.

b) The difference is 37/12.7=2.91 standard deviations

c)

z score =-2.91

d)

The lowest pulse rate is significantly low