pp

2. Impossible As likely as not Certain
Unlikely Likely
________________________________________________________________________
0% 50% 100%
0% = impossible
1- 49% = unlikely
50% = as likely as not
51 – 99% = likely
100% = certain
Experimental probability =
# 표푓 푎푛푠푤푒푟푠 푦표푢 푤푎푛푡
# 표푓 푝표푠푠푖푏푙푒 푎푛푠푤푒푟푠

3. 1) Jake rolls a number less than 7 on a number cube.
2) February will have 30 days.
3) A tossed coin will land on tails.
4) Shayla correctly guesses a number between 1 and 100.

4.  Gavin rolls an even number on a number
cube.
 In the northern hemisphere, the temperature
will get above 90° in the month of July.
 The first person that Sonya meets is a left-handed
person.
 A player with a batting average of .875 gets a
hit on his next at bat.

5. If a player gets 8 hits in 25 at bats, what is
the probability that he will get a hit on his
next at bat?

6. A piston manufacturer is concerned with the likelihood of
defects, as this affects costs and profits. The manufacturer
inspects 250 pistons and finds that 8 have defects.
1) What is the probability a piston will have a defect?
2) If the same manufacturer produces 3000 pistons, about how many will likely
have defects?
3) Pistons sell for $35 and it costs $25 in materials to make each piston. How
much profit would the manufacturer likely make on 3000 pistons if defective
ones cannot be sold?

7.  In Groups of 2, decide who is the drawer
and who is the recorder.
 You will need a whiteboard with the
following table drawn:
Color Tally Frequency Percentage
Red
Blue
Green
Yellow

8. Color Frequency Percentage
Red
Blue
Green
Yellow

9. Jamie spun a game spinner and
recorded the results in the table.
1. What is the probability of
landing on A? B? C?
2. Which letter will Jamie most
likely spin?
Outcome Frequency
A 9
B 6
C 10

10.  If a baseball player has 18 hits in 50 at
bats, what is the probability that he will
get a hit in his next at bat? (% and word)