In: Math
Assume the resting heart rates for a sample of individuals are normally distributed with a mean of 85 and a standard deviation of 20. Use the 68-95-99.7 rule to find the following quantities.
a. The relative frequency of rates less than 125 using the 68-95-99.7 rule is ____________.
b. The relative frequency of rates greater than 105 using the 68-95-99.7 rule is ___________.
c. The relative frequency of rates between 45 and 85 using the 68-95-99.7 rule is _____________.