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Compound Events and Random Sampling

Authored by Anthony Clark

Mathematics

7th Grade

Used 1+ times

Compound Events and Random Sampling
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20 questions

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1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Andre wants to survey a random sample of the student body in his school to find out which day after school would work best for students to do volunteer work for a local charity. Which sample would best represent the student body?

asking twenty students waiting in line for lunch

asking twenty students on their way to the bus after school

asking one person from the seventh grade daily for twenty days

asking one person each from twenty different classrooms during the first class period

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

Four candidates are running for school president. A random sample of students at the school are surveyed about which of the candidates they are likely to choose. The chart above shows the number of students from the random sample who chose each candidate. A total of 800 students are expected to vote in the election for school president. Based on the information shown in the chart, which election outcome is most likely?

Rasheed will win with 192 votes.

Rasheed will win with 189 more votes than he had in the survey

Janelle will win with 8 more votes than the second-place finisher, Rasheed.

Janelle will win with 128 more votes than the second-place finisher, Rasheed

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which statement best describes a random sample of all students in a middle school?

Of all the students who are on the track team, the first three to finish a race are selected.

Of all the students who are in the drama club, every third student on the roster is selected.

Of all the students who complete an assignment, the first, third, and tenth students are selected.

Of all the students who attend a school-wide assembly, those sitting in every third seat are selected.

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Ana wants to know the average student’s opinion of the tardy policy at her school. Which group of students should she survey in order to achieve the most accurate results?

30 of her friends

30 randomly selected students in the school

30 students who are often tardy

30 students who are often on time

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

The sample space tree diagram for a team of three students is shown.  What is the probability that the team would consist of at least 2 girls?

½

¾

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

What is the probability of drawing a blue color and a number 4?

2/5

1/6

3/15

1/15

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

2/12
1/2
1/12
1/24

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