Homework. 5.4 the nortal disu ibulloni aru mile cup cal rule
score: 0.5 of 1 pt
+ 6 of 9 (9 complete)
we instructor-created question
hw score: 83.33%, 7.5 of 9 pts
question
a forester measured 34 of the trees in a large woods that is up for sale. he found a mean diameter of 10.1 inches and a standard deviation of 4.6 inches. suppose that these trees provide an accurate description
of the whole forest and that a normal model applies
a) choose the correct normal model for tree diameters
оа
b) what size would you expect the central 68% of all tree diameters to be?
inches and
inches.
using the 68-95-007 rule, the central 68% of the tree diameters are between
(do not round. type integers or decimals.)
c) about what percent of the trees should have diameters below 5.5 inches?
using the 68-95-99 7 rule, about % of the trees should have diameters below 5.5 inches.
(do not round. type an integer or a decimal)
credi