Question

1. Sonya is thinking of conducting a survey with her seventh-grade classmates. She knows she will need to use a sample of students in her survey. Which of the following surveys would not be valid with a sample of seventh-grade classmates?

best theme for middle school dance

best retirement plans

best shoes for PE

best backpack for school

2. A bag contains 4 white, 3 blue, and 3 red marbles. Find the probability of choosing a red marble.

7/10

7/100

1/20

3/10

Answer 1

1. The survey that would not be valid with a sample of seventh-grade classmates is "best retirement plans." Seventh-grade students are not eligible for retirement plans, so this survey would not apply to them.

2. The probability of choosing a red marble is 3/10 (since there are 3 red marbles out of 10 total marbles).