Estimating Population

Estimating Population

7th Grade

20 Qs

quiz-placeholder

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Estimating Population

Estimating Population

Assessment

Quiz

Mathematics

7th Grade

Practice Problem

Hard

Created by

Anthony Clark

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20 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

At a farm there were 7 cows for every 2 horses. If there was 21 cows estimate how many horses there would be?

9

3

6

14

2.

MULTIPLE CHOICE QUESTION

1 min • 5 pts

A park ranger caught 6 rattlesnakes and marked them. The ranger observed 14 snakes in total. She later recaptured 2 rattlesnakes that were marked. Estimate the

population size.

7

42

12

49

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

_______ is the entire group of objects or individuals considered for a survey.

Sample

Population

Random Sample

Quartile

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

If you increase the size of your sample, the Margin of Error will . . . .

increase

decrease

stay the same

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Yadira wanted to estimate the mean number of words per page in a 180-page book she is reading. Which if these sampling methods gives the best estimate of the mean word count per page in the book?

Count the words on one randomly chosen page.

Calculate the mean word count for a sample consisting of the pages with pictures.

Calculate the mean word count for a sample of 20 pages selected by choosing every 9th page.

Calculate the mean word count for a sample consisting of the 10 pages that appear to have the most words.

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Identify the Sample: The Huddle House wants to know if their customers buy dessert when they eat out. As people leave the restaurant one evening, 20 people are surveyed at random. Eight people say they usually order dessert when they eat out. The manager at Huddle House concluded that most customers do not order dessert. What is the SAMPLE in this scenario?

20 customers from Huddle House

All customers from Huddle House that evening

8 customers from Huddle House

The employees from Huddle House

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

Identify the confidence interval used in the figure below if each shaded area is equal to 0.05.

90%

95%

98%

99%

Answer explanation

The confidence interval used in the figure is 90% because each shaded area represents 0.05, totaling 0.1 for both sides, leaving 0.9 or 90% for the interval.

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