A certain group of test subjects had pulse rates with a mean of
74.3 beats per minute and a standard deviation 11.8 of 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 77.9 of beats per minute significantly low or
significantly high?
Significantly low values are beats per minute or lower.
(Type an integer or a decimal. Do not round.)
Significantly high values are beats per minute or higher.
(Type an integer or a decimal. Do not round.)
Is a pulse rate of 77.9 beats per minute significantly low or
significantly high?
A.
Neither,
because it is
within
two standard deviations
of
the mean.
B.
Significantly low,
because it is
more than
two standard deviations
below
the mean.
C.
Significantly high,
because it is
more than
two standard deviations
above
the mean.
D.
It is impossible to determine with the information given.