Grade 7 McGraw Hill Glencoe - Answer Keys Answer keys Chapter 9: Probability; Lesson 7: Independent and Dependent Events

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Grade 7 McGraw Hill Glencoe - Answer Keys

Chapter 9: Probability; Lesson 7: Independent and Dependent Events

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Question 11 (request help)
Reason Inductively You and a friend plan to see 2 movies over the weekend. You can choose from 6 comedy, 2 drama, 4 romance, 1 science fiction, or 3 action movies. You write the movie titles on pieces of paper, place them in a bag, and each randomly select a movie. What is the probability that neither of you selects a comedy? Is this a dependent or independent event? Explain.

Question 12 (request help)
Model with Mathematics There are 9 marbles representing 3 different colors. Write a problem where 2 marbles are selected at random without replacement and the probability is \(\frac{1}{6}\).
Type below:

Question 13 (request help)
Find the Error A spinner with equal sections numbered from 1 to 5 is spun twice. Raul is finding the probability that both spins will result in an even number. Find his mistake and correct it.
Type below:

Question 14 (request help)
Justify Conclusions Determine whether the following statement is true or false. If false, provide a counterexample.

If two events are independent, then the probability of both events is less than 1.

Question 15 (request help)
A jar contains 6 aqua beads and 4 black beads. If two beads are selected at random, with replacement, what is the probability that both beads will be aqua?
- \(\large\frac{1}{3}\)
- \(\large\frac{9}{25}\)
- \(\large\frac{3}{5}\)
- \(\large\frac{9}{10}\)