（20 Marks) QUESTION 2 4 （a)A certain type of tree has seedlings randomly dispersed in a large area,with mean density of
Posted: Tue Apr 26, 2022 5:56 pm
（20 Marks)
QUESTION 2
4
（a)A certain type of tree has seedlings randomly dispersed in a large area,with mean density of
seedlings being approximately five per square yard. If a forester randomly locates ten 1-square-
yard sampling regions in the area.
Find the
i. probability that none of the regions will contain seedlings.
ii. mean and the variance.
QUESTION 2
4
（a)A certain type of tree has seedlings randomly dispersed in a large area,with mean density of
seedlings being approximately five per square yard. If a forester randomly locates ten 1-square-
yard sampling regions in the area.
Find the
i. probability that none of the regions will contain seedlings.
ii. mean and the variance.