Geometry | Unit 8 | Lesson 7: Related Events | Practice Problems

Each of the letters A through J are printed on tiles that are placed in a hat. Andre selects a tile at random and then replaces it. Clare then selects a tile at random. What is the probability that Andre selects a tile labeled B?

• 0.1

• 0.5

• 0.2

• 0.3

Each of the letters A through J are printed on tiles that are placed in a hat. Andre selects a tile at random and then replaces it. Clare then selects a tile at random. What is the probability that Clare selects a tile labeled B?

• 0.1

• 0.5

• 0.2

• 0.3

Each of the letters A through J are printed on tiles that are placed in a hat. Andre selects a tile at random and then replaces it. Clare then selects a tile at random. What is the probability that both Andre and Clare select a tile labeled B?

• 0.01

• 0.02

• 0.1

• 0.05

Each of the letters A through J are printed on tiles that are placed in a hat. Andre selects a tile at random and then replaces it. Clare then selects a tile at random. Are the events of Andre selecting a tile and Clare selecting a tile dependent or independent? Explain your reasoning.

The Bulldogs have won approximately 67% of their 30 baseball games this season. The Bulldogs won 9 of the 10 games they played when Diego was the starting pitcher. Are the events “the Bulldogs win the game” and “the Bulldogs win the game when Diego is the starting pitcher” dependent or independent events? Explain your reasoning.

Describe two events that are independent. Explain your reasoning.

A researcher surveys 200 randomly selected college students to determine the number of education majors and mathematics majors. 16% of the students surveyed are education majors and 6% of the students surveyed are mathematics majors. 2% of the students are both education majors and mathematics majors. What percentage of the students surveyed are education majors or mathematics majors?

• 2%

• 20%

• 22%

• 24%

100 students were asked two survey questions: Do you have a garden? Are you a gamer? Their responses are summarized in the Venn diagram. How many students surveyed have a garden?

• 5

• 7

• 12

• 36

The table shows the preferences of 40 students surveyed about the design of a new t-shirt for students who are graduating this year.

	short sleeves	long sleeves
pink	12	5
black	14	9

What is the probability that a student surveyed, selected at random, preferred a pink t-shirt with long sleeves?

• 0.125

• 0.1

• 0.2

• 0.15