Page 461 - Math Smart - 7

Check My Understanding (Pg 426) coin landing on tails. If there were more experimental
1. a) data, the probability of both will be almost the same.
(Accept any other possible answers)
4-sided die 3. a) 200
b) 54%
c) Green is the least bought colour. Only 7 green cars
b 1,2. 3. 4 were sold out of 200 cars. Therefore, green is the
iii)0 least likely to be bought by the a customer.
Yellow
2. a Revision (Pg 432)
1. a) Impossible
b) Certain
c) Unlikely, Likely, Impossible
b) Yellow, Blue, Pink
c)i
2.
3. a) Hot chocolate
0% 50% 100%
Name picked J_L I I I I I I I ' I I I I ^ \ L
t t
Cappuccino Tea Coffee Colour
b) 14 c) 12 d)13 a) Coffee
b) Cappuccino
e) If Patty decides to give her ticket movie ticket to Lee, 2^ Coffee
c)
Lee has the best chance to watch the movie.
Tea
Drink picked
Recall (Pg 427) Hot chocolate
1. Experimental probability is 0.7. Theoretical probability is
^Cappuccino
0.5.
2. Experimental probability Is 0.6. Theoretical probability is c) 0.2
3. a) 0.2 b) 0.2
0.167.
4. a)
Check My Understanding (Pg 429)
1. a) Probability of landing on red is 15, green is 15, blue
Score
is 15, yellow is 15, pink is 15.
b) Probability of landing on red is 325, green is 310 ,
blue is 425, yellow is 1150, pink is 15.
b)1 c) 0.5
c) i) Green 11) Red
5. a) 0.04 b) 0.85 c) 0.11
2. a) Probability of knocking over 1 pin Is 12, 2 pins is 14,
3 pins is 18, 4 pins is 116, 5 pins is 132 , 6 pins is
164, 7 pins is 1128, 8 pins is 1256, 9 pins is 1512
,
10 pins is 11024.
b) Probability of knocking over 1 pin is 0, 2 pins is 125,
3 pins is 110, 4 pins is 750, 5 pins is 125, 6 pins is
225, 7 pins is 425, 8 pins is 325, 9 pins is 1150, 10
pins is 110.
c) 9, 1
d) Theoretical probability assumes all is fair and
equal chances of an event happening. However,
experimental probability can be affected by many
other factors like the skill of the person, the
environment and pure luck. (Accept other possible
answers).
3. 45 times
Check My Understanding (Pg 431)
1. Probability that the spinner lands on red Is 0.2, on green
is 0.17, on pink is 0.1, on blue is 0.35, on orange is 0.18.
2. a) 0.4
b) 0.6
c) This is a fair coin because the probabiliy of the coin
landing on heads is similar to the probability of the