Not Visible affected	Minimally affected	Moderately affected	Heavily affected	Total
Red	17	18	5	2	42
Silver	13	9	6	4	32
Norway	7	5	2	0	14
Black	4	0	0	0	4
Total	41	32	13	6	92

A tree is sampled at random from the tract of land studied. What is the probability... (SHOW YOUR WORK)

b) That is was Heavily Affected OR a Black Maple?

The events Heavily Affected AND Black Maple are .... mutually exclusive or or not?

c) That it was Not Visibly Affected and a Norway Maple?

d) That it was Minimally Affected given that it was a Red Maple?

e) That is was a Silver Maple given that it was Moderately affected?

f) To test whether the events Species: Norway and Not Visibly Affected are independent in this collection of 92 trees,

You can check if:

P(Norway)= ?

P(Not Visibly Affected)=?

P(Norway AND Not Visibly Affected)=?