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McGraw-Hill Math Grade 7 Answer Key Lesson 23.2 Probability Models
Exercises
SOLVE
Question 1.
Complete the probability model.
Answer:
Explanation:
A probability model is a chart or table that shows the different out comes possible for an event and their relative probabilities.
Question 2.
If Lynda plays one more game. what is the approximate probability that the game will end in a draw?
Answer:
0.59
Explanation:
Question 3.
If Lynda plays 7 more games and wins them all, how does that change her probability model?
Answer:
Explanation:
A probability model is a chart or table that shows the different out comes possible for an event and their relative probabilities.
Question 4.
What is the probability that a game will end in a draw now?
Answer:
0.55
Explanation:
A probability model is a chart or table that shows the different out comes possible for an event and their relative probabilities.
Question 5.
Based on the new model, how many times more likely is Lynda to win than to lose?
Answer:
Two times.
Explanation:
There is a formula to figure out probability (P)
It is the number of favorable out comes (f) divided by the total number of all possible outcomes (o).
In mathematical terms P
P = \(\frac{f}{o}\)
P = \(\frac{30}{97}\)
P = \(\frac{14}{97}\)
2 times more likely is Lynda to win than to lose.