MDM4U-PROBABILITY Q
&A
1.
a. Canadian background
= Number of people with Canadian background/total number of people
= 513/1000
= 0.513
b. African background
= Number of people with African background/total number of people = 72/1000
= 0.072
c. Other background
= Number of people with ‘other’ background/total number of people
= (1000-513-148-72-56)/1000
= 211/1000
= 0.211
2.
a. There are 3 regions; A, B and B, the favourable outcome is spinning A out of the
3 regions.
Probability = number of favourable outcomes/ total number of possible outcomes
= 1/3
=0.3
=33.33%
, MDM4U-PROBABILITY Q
&A
Therefore, the probability of spinning A is 1/3 or 0.3 or 33.33% b.
c. Looking at the tree diagram there are 2 favourable outcomes of
&A
1.
a. Canadian background
= Number of people with Canadian background/total number of people
= 513/1000
= 0.513
b. African background
= Number of people with African background/total number of people = 72/1000
= 0.072
c. Other background
= Number of people with ‘other’ background/total number of people
= (1000-513-148-72-56)/1000
= 211/1000
= 0.211
2.
a. There are 3 regions; A, B and B, the favourable outcome is spinning A out of the
3 regions.
Probability = number of favourable outcomes/ total number of possible outcomes
= 1/3
=0.3
=33.33%
, MDM4U-PROBABILITY Q
&A
Therefore, the probability of spinning A is 1/3 or 0.3 or 33.33% b.
c. Looking at the tree diagram there are 2 favourable outcomes of
