Question

Sam wants to predict who will be selected as the seventh-grade student council representative. Which of the following groups should Sam survey to make his prediction?

One hundred random students from the seventh grade
One hundred random students from the entire school
The first 100 students from an alphabetical list of seventh graders
The first 100 students from an alphabetical list of the entire school

Answer 1

@Vocaloid

Answer 2

thoughts?

Answer 3

B

Answer 4

nope, remember we wan the sample to match what we are looking for

Answer 5

A

Answer 6

good

Answer 7

Which ratio best defines relative frequency?

Number of nonfavorable outcomes: Number of possible outcomes
Number of possible outcomes: Number of nonfavorable outcomes
Total number of times an experiment is performed: Number of times an event occurs
Number of times an event occurs: Total number of times an experiment is performed

Answer 8

D?

Answer 9

good

Answer 10

A right rectangular prism is shown.

What shape best describes the cross-section cut perpendicular to the base of a right rectangular prism?

Parallelogram
Trapezoid
Rectangle
Rhombus

Answer 11

b?

Answer 12

nope, it'll be a rectangle (it helps to draw it out)

Answer 13

so c?

Answer 14

yes

Answer 15

The dot plots below show the test scores of sixth- and seventh-grade students:

Dot plot for Grade 6 shows 6 dots on score 70, 4 dots on score 80, 6 dots on score 90, and 4 dots on score 100. Dot plot for Grade 7 shows 5 dots on score 50, 7 dots on score 60, 4 dots on score 70, and 4 dots on score 80.

Based on visual inspection of the dot plots, which grade, if any, appears to have the higher mean score?

Grade 6
Grade 7
Both groups show about the same mean score.
No conclusion about mean score can be made from the data.

Answer 16

whichever one has more dots toward the right end

Answer 17

A?

Answer 18

yeah

Answer 19

A box contains 100 colored chips; some are yellow and some are green. John chooses a chip at random, records the color, and places it back in the bag. John has recorded 57 yellow chips and 19 green chips. Using these results, what is the predicted number of green chips in the box?

25
43
76
81

Answer 20

d?

Answer 21

nope

hint: there are about 3 times as many yellow as green

Answer 22

b?

Answer 23

nope

Answer 24

A

Answer 25

19/(57+19) = ?

Answer 26

1/4

Answer 27

@Vocaloid what is it?

Answer 28

@geny55 u asked the same question a month ago.?!

Answer 29

@Vocaloid ?

Answer 30

helllooo! @Vocaloid

Answer 31

A?

Answer 32

Well 1/4 of 100 is 25...

Answer 33

so A is correct?

Answer 34

Ye