a. The relative frequency of rates less than 95 using the 68-95-99.7 rule is n
(Round to three decimal places as needed.)
b. The relative frequency of rates greater than 80 using the 68-95-99.7 rule is n.
(Round to three decimal places as needed.)
c. The relative frequency of rates between 35 and 65 using the 68-95-99.7 rule is n
(Round to three decimal places as needed.)