Respuesta :
Answer:
68,3 %
Step-by-step explanation:
Empirical rule establishes:
In a normal distribution with mean μ and standard deviation σ we have a  relation between values of the distribution and intervals describes as follows:
( μ ± σ )  contains  68.3 % of all values of the distribution
( μ ± 2σ )  contains 95,4 %    and
( μ ± 3σ )  contains 99.7 %
In our particular case we have that
( μ ± σ )  ⇒   (  70  ±  5 )  ⇒  ( 65 , 75 )
( μ ± 2σ ) ⇒   ( 70  ±  10 ) ⇒  ( 60 , 80 )   and
( μ ± 3σ ) ⇒   ( 70  ±  15  )  ⇒  ( 55 , 85
As we can clearly see 68,3 % of values fall between values going from 65 up to 75 inches
